Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba47d0422a04c062…

MALICIOUS

PDF

86.2 KB Created: 2021-04-02 04:04:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 86965777d037084acceb072c5eeab9ec SHA-1: d3b665190ceb026a524a97eeaf4c7ccffed80d31 SHA-256: ba47d0422a04c06265236c3476661812077774939800c5cb72a2632f5d3e3910
196 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many of which point to SEO-optimized content or redirectors, suggesting a link farm or phishing campaign. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier score of 0.9996 further indicate malicious intent. The document body is heavily obfuscated, but the heuristics strongly suggest the primary goal is to drive traffic to malicious or spam-related URLs.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/aws?utm_term=how+much+rp+can+you+ask+from+riot PDF link annotation
    • https://cdn.sqhk.co/nuvaratuji/yzghLjj/real_gem_mine_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448547/normal_6063cb654329b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467306/normal_600f604241bdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445889/normal_602b7c461c348.pdfIn PDF document text
    • https://cdn.sqhk.co/desogepupema/djhbo5E/vizabafadewuvuz.pdfIn PDF document text
    • http://kosamaritaj.getenjoyment.net/chamakam_meaning.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472503/normal_600b5460b94fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383798/normal_6011d45615264.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486969/normal_5fe8b4e9a1cdf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424025/normal_5fec9f7036480.pdfIn PDF document text
    • https://cdn.sqhk.co/vobevufubito/7Odjiij/83399015180.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459468/normal_60610b19a4aa2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369655/normal_5fcaf5a01e0b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382406/normal_5fe7ab1f35187.pdfIn PDF document text
    • https://cdn.sqhk.co/tepikipo/2hf1ghl/mevaxasek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zalatikewal.atwebpages.com/boston_consulting_matrix.pdfIn PDF document text
    • https://748e6e98-33e2-4bd1-95aa-01ea3505a154.filesusr.com/ugd/704f6c_ab980bc52406450788fc12b1ac273126.pdf?index=trueIn PDF document text
    • https://0cfe495c-9a5f-46a1-a5f3-fb21b6211bac.filesusr.com/ugd/7aabb2_f876debbb8094e139ee133795eafd5ec.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC73 3080 bytes
SHA-256: 0fcef192c95d6fd4d5333de3e5f0a04c8525a73f6e29f4febd37223f58d6e746
font_01_sfnt_off0000f77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77C 5440 bytes
SHA-256: f839f96dcefa0832a12f0f79cee9513517b2492ba66d0483bfd42d38dad44f03
font_02_sfnt_off000109eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109EB 13660 bytes
SHA-256: 1ecdb997acfea074153339ef4818bbfd6d9c92417b5a52969b22f8dd545429ef
font_03_sfnt_off00013588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13588 16252 bytes
SHA-256: 2613bce1f15c5f691a1a3a989472159a1011a670d9444ed226435ade8a7ca2c4