Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea900487758f2ca0…

MALICIOUS

PDF

38.5 KB Created: 2020-07-31 21:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 515b151bd53d35091cfef6b44cc6b9ad SHA-1: 6d40d0593b56776301c6719f10d39d383c233c7a SHA-256: ea900487758f2ca0cde671f3c972091334d7e8d1125c735b64b28592f2790760
194 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains the text 'Bol check digit calculator' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous links to Shopify-hosted PDFs indicates a link farm strategy to improve search engine ranking and distribute malicious content. No scripts were extracted, limiting the analysis of further execution steps.

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=bol+check+digit+calculator In PDF document text
    • http://files.connallyband.com/uploads/1/3/1/8/131856381/koguwoxixude.pdfIn PDF document text
    • http://files.orbhoa.com/uploads/1/3/1/4/131408537/bemipatoret.pdfIn PDF document text
    • http://files.henrycountycancerservices.com/uploads/1/3/2/7/132740564/sigukipakulizeb.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/1/0434/5082/6905/files/50924704894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/nebumubeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9553/1424/files/588260553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7349/3406/files/zomimidatisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/tuzisefeluzewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9500/7137/files/kifusosirutodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/11643284743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2644/6498/files/kivis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31082235151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7840/2723/files/87882930575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2853/6734/files/wevotidam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7716/3416/files/kavajetagotafazajeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/malidupilisenibomedetur.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 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_off000058f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58F7 5136 bytes
SHA-256: 7e4e65626018a1e1950a9cd6712754ae3b0c05a44bc92b0d79d305f546221136
font_01_sfnt_off00006a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A69 10656 bytes
SHA-256: 4eb2dfb6000aff986c628e782676f07fe3b2cebc49e632f75dcc560ed8b724ce

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