Malicious PDF — malware analysis report

Static analysis result for SHA-256 c970f091d6b014e2…

MALICIOUS

PDF

43.4 KB Created: 2020-08-14 00:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a72732b200c788513985e70da18b6b39 SHA-1: 5e70bd94c89e44e1cf022f56ad9576c02710b640 SHA-256: c970f091d6b014e2fb4a4612137774a4f4175325b5ded74f163591520823d2b0
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a lure for a 'Hot wheels game free for android' and embeds multiple links. One critical heuristic indicates a malicious redirector link pointing to 'ttraff.ru', which is likely used to deliver a secondary payload. Another heuristic identifies a PDF link farm, suggesting an attempt to game search engine results or distribute content broadly. The document body, though partially corrupted, contains the same lure and the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=hot+wheels+game+free++for+android In PDF document text
    • http://files.sosalliance.org/uploads/1/3/2/6/132695408/podudog_kofakame_gaporiwepojov.pdfIn PDF document text
    • http://files.sourcejuicery.com/uploads/1/3/0/8/130873822/5095126.pdfIn PDF document text
    • http://files.farrisins.com/uploads/1/3/0/8/130814402/6897218.pdfIn PDF document text
    • http://files.christepiscopalschooldrama.org/uploads/1/3/0/8/130874254/rofonexuwijoj_jetuwalobuvinuk_gimadek_doxepo.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/1/0434/6262/3397/files/xoxepufopidupuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6826/8448/files/venice_biennale_2020_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/65771531497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6056/0025/files/nawomuwapiguderofis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/musifusotetuzetadalel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/83576950533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0497/files/gapanisuweropubasiparogev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/courtier_immobilier_formation_suisse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8661/5462/files/m777_howitzer_technical_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5865/8454/files/22167217337.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: sosalliance.org 3 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB3 5164 bytes
SHA-256: 791345b3bc6dbcd6e116bae49a931f599f00adf299c4f8e730c4d95d34696374
font_01_sfnt_off00007027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7027 10172 bytes
SHA-256: d74b2f329f2848d56a9af9e58f2d4f003f603624ab103ef901a1984fbf055bd6
font_02_sfnt_off000092ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92AC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f