Malicious PDF — malware analysis report

Static analysis result for SHA-256 4131997e0c8f58dc…

MALICIOUS

PDF

37.9 KB Created: 2020-08-09 11:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4be8c8e0fc649e15d5397e3a78e204da SHA-1: 9e3b8b1e8781d3b646c7acc48f44f33e8262a7bc SHA-256: 4131997e0c8f58dc8eee70e83b2c6d008a803357e372858e16b7b7761877b74a
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=7.+s%25C4%25B1n%25C4%25B1f+sosyal+bilgiler+test+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to shopify.com domains, suggesting a potential SEO spam or content redirection campaign. No scripts were extracted from this sample.

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=7.+s%25C4%25B1n%25C4%25B1f+sosyal+bilgiler+test+pdf In PDF document text
    • http://files.currockpress.com/uploads/1/3/0/7/130739824/9453603.pdfIn PDF document text
    • http://files.devinmgill.com/uploads/1/3/2/7/132740553/999ca546.pdfIn PDF document text
    • http://giniwela.naturaltherapiesbyelizabeth.com/uploads/1/3/0/7/130738732/6406976.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4259/3189/files/mewugasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7796/7778/files/vajiruretajiwokezizaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9233/7059/files/digexidisaribavomax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/dazaxodaforix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3635/9326/files/63889363238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7458/3702/files/26447926545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/78012776353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3319/7718/files/foxinigakipera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/medarovadujagowurevasote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0633/6925/files/wuzifaf.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

Related samples 5

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_off00004841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4841 5288 bytes
SHA-256: 76be813d84efd8b1c8ec4fd12b47e1668ceb74162e097b39cf19238524a00b90
font_01_sfnt_off00005a4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4A 10200 bytes
SHA-256: 2edd7f5b867029339bdac7171ea81157845bd3a03e32fd7bc9f0194894f4eef1
font_02_sfnt_off00007abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABC 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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