Malicious PDF — malware analysis report

Static analysis result for SHA-256 a881438aa1ad5b90…

MALICIOUS

PDF

42.3 KB Created: 2020-08-02 23:24:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b95a81cb3f9ed23b370de91df961e01c SHA-1: b1047ec41e0124afc93bfd43bab3bb2bb2033620 SHA-256: a881438aa1ad5b90056d85ce50bc410b8e66333a8bf71a33f6edb73975108a89
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=720p+vs+1080i', which is likely used to redirect users to further malicious content. The document also contains a large number of links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt to distribute the malicious content.

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.com/pify?keyword=720p+vs+1080i In PDF document text
    • http://files.tearsofglass.ca/uploads/1/3/1/0/131070713/dugukefiroruvud-vesixufavogagir-gatozanis.pdfIn PDF document text
    • http://files.drkathrynkimball.com/uploads/1/3/2/6/132680808/zagelap.pdfIn PDF document text
    • http://files.customcakesandcupcakes.com/uploads/1/3/1/8/131871633/tolonage.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/1/0432/8259/6004/files/fowukubomuxitopur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/nudokomuwubodojuxira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/38911334004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8070/2366/files/37899236765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/71160874310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1899/3307/files/bajitekogil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wonazonuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/86778759126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/rupofavutudojisuvoretadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/polished_andesite_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6400/7583/files/25396570370.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6994 5040 bytes
SHA-256: 11dab0b365791a7eb3a8bc5757d81ec51183ba228aa3aac5bbec66eaf2be23b7
font_01_sfnt_off00007ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE5 9980 bytes
SHA-256: 4606e7827be3f2b05ec817dab02419bec18a0f9c921e2bdde2bdd4f5c55c9715

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