Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e37cadf371a2fa9…

MALICIOUS

PDF

72.7 KB Created: 2021-06-09 00:01:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 80b03fbea52653be667274b948b33aa9 SHA-1: 6da624317e87089f107e1d6b4d99d4b68e4ce36b SHA-256: 0e37cadf371a2fa9287de55150a29c4487fbc37dcfdc3d26759546ed66d04844
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file exhibits characteristics of a link farm, with a significant number of external links pointing to various domains, including suspicious ones like garglob.ru and weebly.com. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution through these links. No scripts were extracted, but the PDF structure itself is designed to host and present numerous external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://garglob.ru/pbw?utm_term=compound+complex+sentence+is PDF link annotation
    • https://tonibefep.weebly.com/uploads/1/3/4/5/134585532/nawudodumisezujik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459174/normal_5ffcc06b743c5.pdfIn PDF document text
    • https://fopibene.weebly.com/uploads/1/3/4/0/134012765/vuvijimitipitoge.pdfIn PDF document text
    • https://kapalane.weebly.com/uploads/1/3/0/9/130968981/wifovev-zezex-pagepemazo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376371/normal_5fec532e54c3e.pdfIn PDF document text
    • https://balabirow.weebly.com/uploads/1/3/4/6/134690292/71fd5cfe56ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_60386026cd98e.pdfIn PDF document text
    • https://kuvixirizu.weebly.com/uploads/1/3/0/7/130739951/metigabavolutem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498994/normal_603dc211c0449.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406789/normal_604066278298f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f33dace2-17b8-4b64-bebe-95ea4ad9b786/garmin_vivofit_jr_2_stopped_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9e447d3-11f9-4e6c-994e-eb7590f4428a/remigiwunej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbdd93d7-7705-4e7e-a970-32ce010b91e8/oreck_xl_bags_target.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5881702-6084-4623-9cec-be012799d84f/vejijedepejiro.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB1 4888 bytes
SHA-256: 03c9dd421a6f1fa7da840453c2274f0461e46b5198aefde028276a9122ca57a3
font_01_sfnt_off0000f044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF044 10572 bytes
SHA-256: 3230edfbaa35af10c8f9c390f07f86d8a09a61a13cb3271f673edc96544928c4

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