Malicious PDF — malware analysis report

Static analysis result for SHA-256 adcf8a80a2532e69…

MALICIOUS

PDF

197.1 KB Created: 2021-07-08 07:55:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 9aa4e726c7f09d4313ecb98893eaba50 SHA-1: f5e6961c49c1a42cb1b31785bffa6476c17601da SHA-256: adcf8a80a2532e69ba876ffd638ad25ef52b3a08f8ec04bdb7acfe623908d1c7
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and a machine learning classifier, indicating a phishing or trojan payload. The heuristics identified it as a link farm pointing to compromised CMS upload storage, likely used for distributing malicious files. The embedded URLs suggest an attempt to redirect users to download further malicious content, characteristic of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8865

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://garmagostaran.com/Upload/file/laxinawexesulewirin.pdf In PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2943f93d10---tapumawusijujevojuwadig.pdfIn PDF document text
    • https://digireg.es/upload/dunonumawatugudorito.pdfIn PDF document text
    • http://grappin-annat-como.com/userfiles/grappin-annat-como.com/file/puvikeradasijemid.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/71bb3217ff92ba120b42da94e72849e9/zawifuzan.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/4dobm7hlrmf5mrihance2lu717/12913352929.pdfIn PDF document text
    • http://huiking.cn/uploads/file/180131572668.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f166564e99---tibikomekuriritorozo.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bbc9fa594dc---wimutudokipudiwit.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aab3a4cc48b---wazamibapanidepajosomefaw.pdfIn PDF document text
    • http://geologicatoscana.eu/userfiles/files/dapol.pdfIn PDF document text
    • https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/0fe63abdd36b1a61a5fdee385324aabd/nezudiji.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/d4schqad95jgakcvmctf876emr/rujasimaparurapuwafom.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/02b0289a7d9e453d1c4e35302bd8c124/69968316756.pdfIn PDF document text
    • https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/71e2bae4ddde8f9980539da17fce69d4/pukibewusaxurijineso.pdfIn PDF document text
    • http://riverbendhay.com/clients/4/4e/4e1cbd84181290ddb66fb035c9950ff6/File/pofuxowemagurowavejuxak.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/30384621975.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/9f9ok8j05iod8u2bqkbnt91pqt/76100461513.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088002ecd88d---5697846683.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7551c44fe3---87817476168.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608c15a654809---gufajamizibatubaladapa.pdfIn PDF document text
    • http://lacyfamilyunity.com/clients/2/20/203fd950dafdada58ea32e7b96f0d147/File/44927032254.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085ebcda0736---telafarizubagakuvab.pdfIn PDF document text
    • http://dynamicyunnan.com/ckfinder/userfiles/files/kuliwixomejowexuk.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/90kv987def427hi5fn1thb7d59/xixob.pdfIn PDF document text
    • https://alternatifhosting.com/calisma2/files/uploads/75011509501.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=meek+and+lowly+in+heart+meaningPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00027a52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27A52 32280 bytes
SHA-256: 7b9b18eec181af9ec5ccb15a9a6b2e8c3f4778aff1c9613ed0e51f024b7d3577
font_01_sfnt_off0002bdbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDBD 10812 bytes
SHA-256: 2c610d0fe8e02e8f7f4cc2b282fb7cbc39ce1853222468d378ad87ba483f1609
font_02_sfnt_off0002d642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D642 16688 bytes
SHA-256: 6ec450235821cbdd9ed474def1abee0c70d7e65dd7badbfd520c5be541111e1c
font_03_sfnt_off0002edeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDEB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1