Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e9b2d46741b4cd9…

MALICIOUS

PDF

50.3 KB Created: 2020-08-04 03:40:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4192a476c9472f7ae8aaf0f38db0bac2 SHA-1: b5c6c98583054fb474af18391f19547312c6938d SHA-256: 9e9b2d46741b4cd989cd0863d5c6e399fd0ed9476ed26119509b08aada244b4c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, with the primary heuristic identifying a malicious redirector. The document body is heavily obfuscated, but the presence of the URL 'https://ttraff.ru/pify?keyword=calcestruzzo+armato+pdf' strongly suggests a malicious intent to redirect users to harmful content. The file also exhibits characteristics of a link farm, further supporting the attack pattern of distributing malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.ru/pify?keyword=calcestruzzo+armato+pdf In PDF document text
    • http://files.carolinastormhedgehogs.com/uploads/1/3/1/6/131637291/fanipewonosewagafuv.pdfIn PDF document text
    • http://files.benedictionworks.com/uploads/1/3/0/8/130813782/6904961.pdfIn PDF document text
    • http://files.volkerspatchcollection.com/uploads/1/3/0/8/130874122/zuvilipowikogu_kinigura_ratiwole.pdfIn PDF document text
    • http://files.futbolpapa.com/uploads/1/3/1/4/131406811/gejax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2042/7157/files/sofupojim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/rikezusulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/lizerovevumoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3880/8991/files/99139266231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/japarifukokirezujoporox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/49985396339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/40106993878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/bupezasipuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9621/files/zalimukemibonupadixirane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2597/9813/files/folevawusutade.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7129 5256 bytes
SHA-256: dfd68963598182eeeb33fd6814b0b0daa7a35141e8c370661d11de01b9f121b0
font_01_sfnt_off000082f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F4 11044 bytes
SHA-256: 42642e1614c3204ac7c36ae9adf7b6cc57cb3516239577f46977dc7f1144dd4c
font_02_sfnt_off0000a6d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D1 16244 bytes
SHA-256: 37bd064822a4139c5d8e3cdb2e2dd8d0ae9d956962f76839c9edaf1267f3d3f3

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