Malicious PDF — malware analysis report

Static analysis result for SHA-256 abfc2eefb730a14e…

MALICIOUS

PDF

92.3 KB Created: 2021-04-03 08:05:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d00deb5678388d34ba395bd0efb22a95 SHA-1: 1800d9dbdb6188d0da38695c2aae506fdaea24c2 SHA-256: abfc2eefb730a14e658919e603a8b652a9533899d096bae21122eb0753ad4718
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The document body, though partially corrupted, mentions a 'Honda eu2200i generator propane conversion kit', likely a lure to attract users to click on the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/strik?utm_term=honda+eu2200i+generator+propane+conversion+kit
    • https://lazogipinu.weebly.com/uploads/1/3/1/0/131069887/wevutu.pdf
    • https://jotukodapoze.weebly.com/uploads/1/3/4/6/134632246/konefek.pdf
    • https://tebokatesax.weebly.com/uploads/1/3/3/9/133999418/074e43b2b9ca4ec.pdf
    • https://cdn-cms.f-static.net/uploads/4482023/normal_60445abd63f08.pdf
    • http://milukiwidawedej.22web.org/dun_and_bradstreet_report_pricing.pdf
    • https://cdn-cms.f-static.net/uploads/4368972/normal_60267e5c7de65.pdf
    • https://cdn-cms.f-static.net/uploads/4476002/normal_604ecc3b61d0c.pdf
    • http://idealsit.fun/american_pie_4_movie_in_tamil51wc3.pdf
    • http://reduslim-italiaofficial.site/gezavowigewebef7ppfo.pdf
    • https://cdn-cms.f-static.net/uploads/4457582/normal_5fd67c7fe7006.pdf
    • http://tigesonepovar.66ghz.com/convert_fraction_to_percent_worksheet.pdf
    • https://luxisawevevolal.weebly.com/uploads/1/3/2/6/132682936/c6528ac878b587.pdf
    • https://fojojaroj.weebly.com/uploads/1/3/1/4/131453509/bigizipu.pdf
    • https://volilisaxox.weebly.com/uploads/1/3/1/4/131453747/4e824282547.pdf
    • http://luminar4-download.xyz/bella_juicer_manuallgab8.pdf
    • https://porokademapu.weebly.com/uploads/1/3/4/9/134901730/pinigobek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://16564176-4c62-44d7-82e3-1dea6b832d73.filesusr.com/ugd/5e57cf_f3d29277198a450a8c2d706a2399ef00.pdf?index=true
    • https://cb8582fb-ab29-4f13-bfd4-623ca244ab52.filesusr.com/ugd/d61b30_11b76606ebf24b4799ecc36ade8f7541.pdf?index=true
    • http://pidezesu.rf.gd/used_dirt_bikes_for_sale_near_me_125cc.pdf
    • https://4a31e3f8-49e3-4331-b1a9-c0bb7a6b9dbc.filesusr.com/ugd/599f1c_e29b67871545433d9b7a3643fb240464.pdf?index=true
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000112f1.bin
e3138fb7229fc16586f533b37e0b2b53ea9914b28b5d57b258d0da077f4e4421		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112F1 5568 bytes
font_01_sfnt_off000125f8.bin
70e4a5eaaffdfb3680c44462483e1548037a8a40211c03beabd2cc76b9e60348		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125F8 11712 bytes
font_02_sfnt_off00014dfe.bin
9c47a8ecf7103172530608de19fa11afb8a035ab51042e9cb8c6809f09ebb189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14DFE 16344 bytes

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