Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ddf5b4846deb4a…

MALICIOUS

PDF

78.8 KB Created: 2021-07-24 23:58:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 1eabf920dbb3e5196e7186f001bd9300 SHA-1: 42eeb420c8d7f010221f4314f4cd6c769ecd2c51 SHA-256: 45ddf5b4846deb4a9a15297ec8c4fc66a44694c773c35e8ac0ecc870cb83b999
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised WordPress upload directories, suggesting a phishing or malware distribution scheme. The embedded URLs are the primary indicators of compromise, directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608e1d67e27c2---loriwipedokulodemenuwevu.pdf In PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/fed5e8e8be7525f9fa401fea5195ca08/54732462186.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bb061fa909e---98477748557.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/iqigi3e463f6tdh8g6sisuq75q/fasawojuvaxiru.pdfIn PDF document text
    • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1608ffad4e41a2---fuwanatiwironavizojupo.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1609117545b071---27555725142.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/9e085b8b3977bf7fa00770b5b1e0fc69/34731721856.pdfIn PDF document text
    • http://simonide.org/userfiles/file/82198687012.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/af7ed943569b6fd33229b4b5c6b1ada7/jiroliruniwib.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160846cba70309---58771782222.pdfIn PDF document text
    • http://studiobardinisrl.com/userfiles/files/28280819654.pdfIn PDF document text
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/3f8e6071e18ac3403d73d60357ec6d07/tizowilemozo.pdfIn PDF document text
    • http://songiadabinhphuoc.com/upload/ck/files/lofuletalowusixivupakowo.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/29bdbc10d35806a8da7ed464635401d6/lazexonugido.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cde881b759---86517100681.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/zukonokoneg.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/2b1ce6d294ba34bd84aa1bd93b360fa7/fokomikotovoferujife.pdfIn PDF document text
    • http://texmet.pl/userimages/file/85921591588.pdfIn PDF document text
    • http://avandcie-energy.com/ckfinder/userfiles/files/lutix.pdfIn PDF document text
    • http://weddingdiy.cc/uploadfiles/files/20210701_165158_3454.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/qshjm5kk785hf449issn7v0r3j/42789821816.pdfIn PDF document text
    • http://kleinschadenexperte.de/userfiles/file/zojuduzanisuj.pdfIn PDF document text
    • http://tieclangman.com/Images_upload/files/kurok.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=lic+jeevan+saral+table+no+165+maturity+calculatorPDF 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_off0000ce52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE52 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE669 11252 bytes
SHA-256: fc0ad5532a67d066848fc354dda1378467f37ac146ed96b7284bcc837e219a18
font_02_sfnt_off000100e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E5 16624 bytes
SHA-256: e4e33275f94ad6fea558f7ad01a59fd80023a75b0bb3ee3e2de6395fd05dd3b5