Malicious PDF — malware analysis report

Static analysis result for SHA-256 8953f1eda174f941…

MALICIOUS

PDF

71.4 KB Created: 2021-02-23 23:02:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3b3b1746c5c0175df93a345f2e0f0edd SHA-1: 506e654928e4580112cf65f606baf99e63c923e2 SHA-256: 8953f1eda174f941c2c7c368e0fd85f768a4cda24947e2ab8b16164be10e41e6
186 Risk Score

Malware Insights

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

This PDF document contains numerous external links, a common tactic for SEO spam and phishing. The document body, though heavily obfuscated, appears to reference 'plants vs zombies 2 apk game free download', suggesting a lure for users seeking game downloads. The presence of multiple external links, including one to 'baarspo.ru', and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=plants+vs+zombies+2+apk+game+free+download+full+version PDF link annotation
    • https://xofivexaroza.weebly.com/uploads/1/3/4/3/134321457/9412245.pdfIn PDF document text
    • https://xasuzetevoke.weebly.com/uploads/1/3/2/6/132681443/528608b443f.pdfIn PDF document text
    • https://fifusikusivupe.weebly.com/uploads/1/3/4/6/134638905/8946354.pdfIn PDF document text
    • http://kuvuradivikosef.iblogger.org/live_tv_free_app.pdfIn PDF document text
    • http://debasowajedo.22web.org/bbt_mailing_address_auto_loan.pdfIn PDF document text
    • https://wopopodixela.weebly.com/uploads/1/3/0/9/130969383/76868f05b2.pdfIn PDF document text
    • https://jirogadipew.weebly.com/uploads/1/3/1/6/131606393/414f5f59.pdfIn PDF document text
    • https://zibekasosux.weebly.com/uploads/1/3/4/0/134040395/bofukanewujo.pdfIn PDF document text
    • https://bujasosepamus.weebly.com/uploads/1/3/4/6/134626994/laligez.pdfIn PDF document text
    • https://nepexinis.weebly.com/uploads/1/3/1/4/131438592/zelugerum.pdfIn PDF document text
    • https://vopukuno.weebly.com/uploads/1/3/1/3/131383764/8538406.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tomosuromiv.epizy.com/lujakurikigufexis.pdfIn PDF document text
    • http://lawazujazigefon.epizy.com/10162248974.pdfIn PDF document text
    • http://jedigox.epizy.com/cursed_minecraft_texture_pack_mcpe.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/ableton_live_10_crack_windows.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_off0000d6e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E8 5900 bytes
SHA-256: b5b6711e5d1424eb495adf39dee5498001f3616e1b5c07c2e094c1999007b577
font_01_sfnt_off0000eb0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0A 10940 bytes
SHA-256: d42df36df25e9162c14e83ce869e5bde4fbe785b2d2b8d0cf78c4fb0a0513c55

Open this report in the interactive analyzer, or submit your own file for analysis.