Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ba8ed38546e3a3f…

MALICIOUS

PDF

74.2 KB Created: 2021-02-01 12:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 774c95471102fcd11993c0c3b94f1738 SHA-1: a94db02dddd9100c113e1bb63751fbeeeda22af8 SHA-256: 7ba8ed38546e3a3f58420799b73932d9dcd66a1f098d88f6394fd371db5384d7
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a significant number of external links, many pointing to disposable domains, suggesting a link farm or SEO manipulation scheme. The presence of embedded URLs and the document's structure strongly suggest it's designed to redirect users to potentially harmful websites, possibly for phishing or malware distribution.

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://leonvi.ru/123?utm_term=viper+acr+for+sale+canada PDF link annotation
    • http://bigtittybella.com/48580868975hadq9.pdfIn PDF document text
    • http://romeoplanet.club/foxit_reader_editor_onlinekqz37.pdfIn PDF document text
    • https://pevunefimexog.weebly.com/uploads/1/3/1/0/131070247/robixewe-jafefo-nomagup.pdfIn PDF document text
    • https://nozodipipagim.weebly.com/uploads/1/3/1/4/131438171/revafoxabup-lavuxij-wujiwoziwoxusi.pdfIn PDF document text
    • http://ourfutures.space/48441014876lbe85.pdfIn PDF document text
    • https://rizimajapalikum.weebly.com/uploads/1/3/4/6/134633575/bomefimuz.pdfIn PDF document text
    • http://jenupekob.iblogger.org/supizeruz.pdfIn PDF document text
    • https://sutovuwoti.weebly.com/uploads/1/3/0/9/130968995/suvimuwekuvox-bonunugunaf.pdfIn PDF document text
    • https://lupudeme.weebly.com/uploads/1/3/1/3/131378919/2a19a7ef694.pdfIn PDF document text
    • https://butusokusumowa.weebly.com/uploads/1/3/5/2/135294155/zosiluluxesu_nizomifali.pdfIn PDF document text
    • http://naropiwazufilu.22web.org/37338043759.pdfIn PDF document text
    • http://twitter-center.com/mount_laurel_njz97kt.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/jokotaziweluge/abba_mamma_mia_piano_sheet_music.pdfIn PDF document text
    • http://nixefafezas.rf.gd/76470582635.pdfIn PDF document text
    • http://tefabawamibane.epizy.com/25720864006.pdfIn PDF document text
    • http://kepinud.rf.gd/say_my_name_beetlejuice_sheet_music.pdfIn PDF document text
    • http://lironif.epizy.com/83077135003.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/defos.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_off0000d753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD753 3080 bytes
SHA-256: 5510861e0701cb7f7f57c1c4f6c9cfe19f8a483cefdede93edc0bf9cc0aea221
font_01_sfnt_off0000e25b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25B 5116 bytes
SHA-256: 15ed42a3d6aa69c43cbd09b98b1828e68a97462915c703b6f29fc36e903fa85b
font_02_sfnt_off0000f3d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D6 11756 bytes
SHA-256: 42e0d62bd62784030e452e2d71ee19a7920ba184c3542508ec2b2aaf8e08bd12

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