Malicious PDF — malware analysis report

Static analysis result for SHA-256 f871926a62b81105…

MALICIOUS

PDF

43.0 KB Created: 2020-07-31 06:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7abdc5513a9e0579f5bc8ae47676ef34 SHA-1: e0ce5d0f8e1cfc37e316dd8dc5f93d84b86a308d SHA-256: f871926a62b81105926c2e00649b5a953e5869878ef236f94f5687a72da11683
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious sites. The document body, though heavily obfuscated, contains text related to 'official badminton score sheet pdf', which is likely a lure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=official+badminton+score+sheet+pdf, which is flagged as a malicious redirector.

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=official+badminton+score+sheet+pdf In PDF document text
    • http://files.tukatafoundation.org/uploads/1/3/2/8/132814990/166765.pdfIn PDF document text
    • http://files.eagletheatrecompany046.com/uploads/1/3/0/7/130739101/pasibisudopomowoluto.pdfIn PDF document text
    • http://files.iamscientiste.com/uploads/1/3/0/7/130739155/09a234aa63e54.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/1/0428/9835/8432/files/rerotapok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/27604891315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0010/3071/files/zageweke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rokagarunawawutasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/52803275630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3934/2247/files/rojiditiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mojarugalemidim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0166/6969/files/nuzudexesazosirilaxaluti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunumegosuvuvorewufo.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
🗂 Part of campaign: tukatafoundation.org 8 samples

Related samples 8

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_off00006b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B71 5348 bytes
SHA-256: 6399894c66ac700f2a9b58429df4dd1962ea780e82edd324fae717594e6339b9
font_01_sfnt_off00007d60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D60 9856 bytes
SHA-256: cd612ba328eb50251a4388349a257640fb035be40214d9b17e771e731f2b7ab9

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