Malicious PDF — malware analysis report

Static analysis result for SHA-256 3391cc6d1ea80e33…

MALICIOUS

PDF

69.4 KB Created: 2021-02-20 08:50:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 54817caf13c4152185447eecbfd5f65b SHA-1: afb0b4cdb9a4a9776d1c96ee8191374f665a9b2c SHA-256: 3391cc6d1ea80e33d6a9885198d421c269ea1f1b5aad9ff2ddd9547719a54caa
186 Risk Score

Malware Insights

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

This PDF file functions as a link farm, directing users to numerous external websites, many of which are hosted on disposable domains. The heuristic firings indicate a deliberate attempt to create a large number of links, likely for SEO manipulation or to host malicious content. While no scripts were explicitly extracted, the PDF structure and URL patterns strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://maypoin.ru/wix?keyword=religious+stores+near+me PDF link annotation
    • http://nowofuguvinidaw.iblogger.org/best_video_er_for_android_tablet.pdfIn PDF document text
    • https://pareruli.weebly.com/uploads/1/3/4/8/134891857/47160.pdfIn PDF document text
    • https://cdn.sqhk.co/fijajiles/gcgj4bb/easy_care_oximeter_amazon.pdfIn PDF document text
    • https://jefamozalubibul.weebly.com/uploads/1/3/1/4/131438275/tiwemobedabam_levav_sifanigifasokij_rolofuwek.pdfIn PDF document text
    • https://losiweso.weebly.com/uploads/1/3/1/3/131380476/7acca1b.pdfIn PDF document text
    • https://lajidusok.weebly.com/uploads/1/3/1/0/131070852/xivefupezinesus-vamavubowadez-liwin-nebew.pdfIn PDF document text
    • https://bofuvozera.weebly.com/uploads/1/3/5/3/135331850/267462.pdfIn PDF document text
    • https://cdn.sqhk.co/govazofaj/bpQgcjc/52161327573.pdfIn PDF document text
    • https://nawiveburejofi.weebly.com/uploads/1/3/1/3/131381882/8874919.pdfIn PDF document text
    • https://cdn.sqhk.co/kufalavoxig/fjijcgc/wumixetuxol.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/Fv1K5hg/blackjack_strategy_trainer_youtube.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dejogamolefip.rf.gd/45489988266.pdfIn PDF document text
    • http://gejulakan.epizy.com/always_somewhere_karaoke.pdfIn PDF document text
    • http://megisaduvivegi.epizy.com/badaga_love_songs_free.pdfIn PDF document text
    • http://fojufofe.rf.gd/71585674861.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_off0000d596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD596 5012 bytes
SHA-256: 76931cd0b73b2818ffda37a477bdc3fa6a0f002dfde6db07bb5d672559aceef4
font_01_sfnt_off0000e68f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE68F 10016 bytes
SHA-256: aebe44bfa93689842e183c5f77cd16a080e6bbb88bef7c6f88a85a7992e58a89

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