Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7f8500e48e38fe…

MALICIOUS

PDF

35.2 KB Created: 2020-08-08 00:33:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d57dd9d44dce12d2897c758bd930c65 SHA-1: c8c2135680d83c04b14cbcc536f35ddba58744e2 SHA-256: 9f7f8500e48e38fe1decc94232e765db465cc4e0bfebcea006b9e303e97a91c3
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or SEO poisoning tactic to drive traffic to malicious sites. The document body, though partially corrupted, contains the same mathematics-related title as the malicious URL, reinforcing the lure. No scripts were extracted, limiting the analysis of direct execution capabilities.

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/wb?keyword=maswali%20ya%20hisabati%20darasa%20la%20nne%20pdf In PDF document text
    • http://files.virginiabaptistscommitted.org/uploads/1/3/1/4/131453124/zimefuxabusonikuka.pdfIn PDF document text
    • http://files.frankicolett.com/uploads/1/3/1/6/131636941/3872298.pdfIn PDF document text
    • http://files.myschievia-ntxb.com/uploads/1/3/1/8/131872137/2772053.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/1/0436/2335/0434/files/2127724689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4038/1855/files/58433793694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/3682/9854/files/battery_capacity_calculation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5630/0186/files/sowiximifubezogebidefob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1261/1481/files/accounting_term.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7506/6273/files/bodud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5453/0709/files/wijifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/36614434403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/les_liants_et_les_adjuvants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/munaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7671/3637/files/nuxunudopobekofubekodag.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 2

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ADC 5468 bytes
SHA-256: bc35f2c9b16ae0e7519687a7fb7d20edf08f7c6cb771ac23e93750d0763d63ee
font_01_sfnt_off00005d87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D87 10100 bytes
SHA-256: bf56b46c06b5934085ffd7e2c8fe3d79f906bf5ec556fc88cfbaf6e816d86306

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