Malicious PDF — malware analysis report

Static analysis result for SHA-256 94e1bfd9fb157f6d…

MALICIOUS

PDF

111.3 KB Created: 2021-01-18 15:00:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: c1d06e84fcfd38918050050444510d7f SHA-1: fd50e2e50591328c02b5e0b699e00914d3556ec5 SHA-256: 94e1bfd9fb157f6dced16c74500ee313ec0a8677689d0e2901b34b8479cd0aa7
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable domains, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URIs are indicative of a malicious document designed to redirect users to potentially harmful content.

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://traffset.ru/123?utm_term=death+note+l+death+reaction PDF link annotation
    • http://xujilutobidiko.iblogger.org/attack_on_titan_2_nintendo_switch.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/qhf1hbV/dusikob.pdfIn PDF document text
    • https://worivoka.weebly.com/uploads/1/3/4/5/134588103/zutivu.pdfIn PDF document text
    • https://cdn.sqhk.co/xisalaximel/ecK9Kgj/tifogorijojuk.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/hcguiib/k_nguyen_huy_n_tho_i_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/tO1gfc8/fall_guy_game.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/hhjiuu4/legend_of_gunners_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/sifolilo/Sjggijf/magixomararobabavegojolo.pdfIn PDF document text
    • https://xefanopebowemid.weebly.com/uploads/1/3/2/6/132681782/lijifopujelovu.pdfIn PDF document text
    • https://sajogosekatoja.weebly.com/uploads/1/3/4/6/134682383/4589453.pdfIn PDF document text
    • https://zomurudol.weebly.com/uploads/1/3/4/4/134492975/xovigijipuridu.pdfIn PDF document text
    • https://witerimapiw.weebly.com/uploads/1/3/4/5/134599407/fbdb2c4ae.pdfIn PDF document text
    • https://cdn.sqhk.co/wusuzevomo/hjhbogi/nenutibiwozogisarexup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/njrotc_drill_rifles.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/flags_of_the_world_printable_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/5116342140.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/bigusupevigevekarage.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/34072147973.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000155fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155FB 9216 bytes
SHA-256: f81a9aadebd68d4ed8ed772f01e42d4cc167f87c76d7e23c2360daa0de4b821e
font_01_sfnt_off0001754a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1754A 4848 bytes
SHA-256: 3286d0bb293a4e77d2af32515761b12f8643e236a53ad49f1d79ae9567a68f8a
font_02_sfnt_off000185c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x185C3 13272 bytes
SHA-256: d40f777d73637406d9d501720ae985cef39acb20495cfaa83864c43cc731c390

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