Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4d77a8eb8ef130f…

MALICIOUS

PDF

41.1 KB Created: 2020-08-21 20:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79ac80165b4402301e60d6c7a3e1dbdb SHA-1: 51a88bfd635b1fdfb4753c3eac4622fefd3b36ec SHA-256: b4d77a8eb8ef130fb10578246d3ea083c364075e412587a084446a43b462d1f4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a link that redirects to a known malicious domain (ttraff.com), disguised as a 'seattle seahawks injury report'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body contains the lure text and the malicious URL. The primary attack pattern involves social engineering to trick the user into clicking the malicious link.

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=seattle+seahawks+injury+report+week+9 In PDF document text
    • http://files.carmenleonamartin.com/uploads/1/3/1/3/131380042/jexijivutume.pdfIn PDF document text
    • http://files.theseed906.com/uploads/1/3/2/6/132681308/fazusezibawajonakej.pdfIn PDF document text
    • http://gezopupav.interactivetutors.hk/uploads/1/3/0/7/130738799/dirurun_kifozakenu_begutinata_pinepukaki.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/1/0433/9436/7644/files/separador_de_programa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5156/5724/files/58543936813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1916/5086/files/9430147758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0793/3603/files/accounting_and_finance_cv_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8352/1445/files/pepekesujoxemogubafobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/19082005547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1933/2766/files/campaldino_1289_the_battle_that_made_dante.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0066/8065/files/css_linear_gradient.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9577/5650/files/peter_kreeft_handbook_of_christian_apologetics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8339/9329/files/xowem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2462/1473/files/94470342616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1738/6659/files/15801460745.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 1

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_off000061bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BC 5500 bytes
SHA-256: 2469372a529aff476cedd72a04e7e962f59cd95ac730a7eb136227fc213961f8
font_01_sfnt_off0000746d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x746D 10348 bytes
SHA-256: 55d34c70ecb08cc4ad0949764c71cc8a2a59d81c9ae17fd9d7a91d336a0296f4

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