Malicious PDF — malware analysis report

Static analysis result for SHA-256 f65be068fbbab67b…

MALICIOUS

PDF

77.2 KB Created: 2021-02-27 04:22:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 646a9d399fe2fc4defa5423b30877870 SHA-1: b600206ee5029e70ee09f2cfa75196c43305b309 SHA-256: f65be068fbbab67be69e1b32ea88dcbffb7226be7020f681b8969af488293e96
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF SEO Link Farm' heuristic, suggesting a malicious intent to manipulate search engine results or redirect users to potentially harmful sites. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were directly extracted, the presence of numerous URLs indicates a phishing or content-serving attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/123?utm_term=adjectives+to+describe+the+sun
    • https://cdn.sqhk.co/fabozesemi/hejigd1/tafijofolisuzuvirewi.pdf
    • https://cdn.sqhk.co/tazuxalana/nttthev/81970079676.pdf
    • https://cdn-cms.f-static.net/uploads/4456128/normal_602b0da3c7e29.pdf
    • https://suxaniwaxunese.weebly.com/uploads/1/3/4/3/134385499/siduzusiko-sedipezemopupis.pdf
    • https://static.s123-cdn-static.com/uploads/4365563/normal_5ff5b72a44618.pdf
    • https://cdn-cms.f-static.net/uploads/4489052/normal_603974dad0af3.pdf
    • https://cdn-cms.f-static.net/uploads/4404740/normal_6029eee04d316.pdf
    • https://cdn-cms.f-static.net/uploads/4459318/normal_6019d1e095156.pdf
    • https://cdn.sqhk.co/miwiwefe/EJ8DghN/nuludakukozuzafet.pdf
    • https://teguvubab.weebly.com/uploads/1/3/4/3/134347924/mutofapuja_vajebew_bifibavulix_tuwinapomozok.pdf
    • https://cdn-cms.f-static.net/uploads/4476943/normal_6030f8b1c871d.pdf
    • https://cdn.sqhk.co/suzeboxiwo/jdPidjQ/dino_jurassic_craft_evolution_mod_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4419623/normal_60038e8123d7f.pdf
    • https://zijedizadof.weebly.com/uploads/1/3/4/6/134692085/venelira-sizoxufuw-fubudixa.pdf
    • https://vinusipiwa.weebly.com/uploads/1/3/1/3/131381721/d8255cd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gejaxogepokotow.rf.gd/dufivezune.pdf
    • http://gemosufijubimup.epizy.com/44010589080.pdf
    • http://siwojanapav.epizy.com/kerenimogegif.pdf
    • https://s3.amazonaws.com/baxegezivumi/69931426364.pdf
    • http://tabewozuzigenog.epizy.com/87222460522.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0c0.bin
3760735c7e26450915ed2949e4cb8851f1fa4ba4df970af6ff9165dd52e647c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C0 5052 bytes
font_01_sfnt_off000101f4.bin
e0b9040c557d8b2bc62029580cae9e2af176c925b6360d1d00edc7f4ecdbebd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101F4 11324 bytes

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