Malicious PDF — malware analysis report

Static analysis result for SHA-256 08088241107b00a8…

MALICIOUS

PDF

73.7 KB Created: 2021-02-22 19:23:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 3584d1bb31cad9d2d39cdbbfc08ec7b5 SHA-1: bf079ac6fe9d327b08e36f5de20bf21492ad5706 SHA-256: 08088241107b00a8f7d1a6dd8d0d861907582fbf6db5b9394e1da8676cfa6541
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the PDF structure itself is designed to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/strik?utm_term=rules+of+attraction+book+trailer PDF link annotation
    • http://gefupokilive.iblogger.org/diana_palmer_new_release_2020.pdfIn PDF document text
    • https://gozataxuwo.weebly.com/uploads/1/3/0/7/130740141/kerolaf_kozunu.pdfIn PDF document text
    • https://xesofizagib.weebly.com/uploads/1/3/4/4/134491847/f827c6eb36b1924.pdfIn PDF document text
    • https://venefenotufawu.weebly.com/uploads/1/3/0/7/130775800/9029045.pdfIn PDF document text
    • https://supavutoni.weebly.com/uploads/1/3/4/7/134713891/251512bb080.pdfIn PDF document text
    • http://xupenirulavep.iblogger.org/pokka_carrot_juice_nutritional_information.pdfIn PDF document text
    • https://fovivijidilel.weebly.com/uploads/1/3/4/8/134888041/gotigezufekujatuxote.pdfIn PDF document text
    • https://bigogewoxof.weebly.com/uploads/1/3/0/7/130739615/f4966c6cc262256.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464541/normal_5feb215cd41f2.pdfIn PDF document text
    • https://tupisefam.weebly.com/uploads/1/3/1/3/131383837/pepoduzuzeg_benetubetan_sowijolulidokat_totazo.pdfIn PDF document text
    • https://sukaxivex.weebly.com/uploads/1/3/4/8/134895869/10029f45197eaee.pdfIn PDF document text
    • https://wizitizisib.weebly.com/uploads/1/3/4/3/134361222/01d057ecc.pdfIn PDF document text
    • https://rivixajonezil.weebly.com/uploads/1/3/1/4/131437445/mafoliwafu_gapazabula_furilewemon.pdfIn PDF document text
    • https://kusafulidofet.weebly.com/uploads/1/3/4/0/134017607/b318d3c5f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xepumobokuv.rf.gd/avital_5303l_security_remote_start_system.pdfIn PDF document text
    • http://toxitule.epizy.com/89883235709.pdfIn PDF document text
    • http://reduxaxu.epizy.com/81437287208.pdfIn PDF document text
    • http://tekudadi.rf.gd/levariruzo.pdfIn PDF document text
    • http://revulagolorer.epizy.com/lanusunisunaxikiduvekesar.pdfIn PDF document text
    • http://gikawulav.rf.gd/how_to_build_knee_strength_for_running.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_off0000e177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE177 5088 bytes
SHA-256: 57140745e499cc53f356d339e7db37a7aeae1c355048c5057db1ab9b27a99aa4
font_01_sfnt_off0000f2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DC 11400 bytes
SHA-256: d68e35d9ce4064058314da22b96212080b72f5013e0fe5c90169d8e26b6d68f7

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