Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2475276990cb7c8…

MALICIOUS

PDF

315.1 KB Created: 2021-06-27 17:17:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 4c8ee975bb9461c4262e03cea5a410e8 SHA-1: 47e986f211aeb0751a639b7181ef4f65e0bcf7d0 SHA-256: e2475276990cb7c830ca5c888ac146c0cb35de5d5da0e5f8c8972944709f4b63
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The heuristics reveal it uses an SEO redirector disguised as a free download link, pointing to a compromised WordPress site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to lead the user to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9767

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://theatresaucinema.fr/uploads/file/saveluvulolefi.pdf In PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/a9df30a90057a79d8d0cde010135f9fc/38144849101.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/80598070939.pdfIn PDF document text
    • https://sasalidayanisma.org/uploads/file/mekafidarerovi.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/85136909025.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/4d79e57e96a635ad42cbc74b13db7813/10813591706.pdfIn PDF document text
    • http://ekolojikweb.net/upld/userfiles/file/19017846166.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/8919877f69d23a37ea1fe1feef8aee13/53087848347.pdfIn PDF document text
    • http://ags-sib.ru/ckfinder/userfiles/files/ruzuwotogubipemevinemoket.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b21ffe3524f---43768052275.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072dab8e8a77---tupig.pdfIn PDF document text
    • https://bienenaktuell.com/sites/bienenaktuell.com/files/file/45739310978.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/80f55827e028f5305b4c9a7d6341c669/zutizereteduvewuji.pdfIn PDF document text
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/93l293v3pnv770vhsk82svnr2n/58833407747.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/js5b3bfbrpjq8vo8cofc56lhv4/xafofedapelilunitomu.pdfIn PDF document text
    • https://traonguoc.vn/wp-content/plugins/super-forms/uploads/php/files/nhnt4u2n443981lsif7bni2r3r/gusalomodegulozirofakev.pdfIn PDF document text
    • http://whatdwellswithin.com/file/bujemojebeduga.pdfIn PDF document text
    • https://kingdomofgodmn.org/userfiles/files/54931311937.pdfIn PDF document text
    • https://uclerbaklava.com/resources/file/12103711635.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/ql7c4shkdu1r1j0rpahtcb8o82/80000998159.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a18bafc8819---kinori.pdfIn PDF document text
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/26380smeicijh69uhciidiqv5l/12751986990.pdfIn PDF document text
    • https://hansenlight.com/UploadFile/files/xiwuku.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/ea6428b982678881bcd24f98d41e154f/58101936300.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=data+mining+concepts+and+techniques+morgan+kaufmann+pdfPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004756c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4756C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00048d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48D83 11360 bytes
SHA-256: d3f4f12607a8bc67ff1a7ae966a403bdf6e4f217ab09c5a1118f28c5b1a0ceb7
font_02_sfnt_off0004a786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A786 23068 bytes
SHA-256: 26239c7bdf0d3048318239317119e4bd972c850ff53b51ff75a58198e16d98e3