Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef66637d22a498b8…

MALICIOUS

PDF

43.1 KB Created: 2020-08-14 05:24:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 907ce60e4148c329922a2daef0f88ae4 SHA-1: 6748b434fd8b147f1833c3044149f0d31e45c460 SHA-256: ef66637d22a498b860526d972e9ec29856c0525457dafd31f8e325a913419773
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=thanksgiving+menu+template+pdf'. This URL is part of a link farm, as indicated by another critical heuristic. The document body also contains this URL, suggesting a social engineering lure to trick users into clicking on malicious content. No scripts were extracted, and the primary malicious activity appears to be redirection to a potentially harmful site.

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=thanksgiving+menu+template+pdf In PDF document text
    • http://begowu.artoutofblack.com/uploads/1/3/2/6/132680839/vituliwivobe_nuwifu.pdfIn PDF document text
    • http://lagosoro.weatoguefarm.com/uploads/1/3/0/7/130776132/9b04ec8164.pdfIn PDF document text
    • http://files.bwamanila.com/uploads/1/3/1/3/131381799/3739181.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/1/0439/3939/7790/files/cake_decorating_tutorials_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9226/1529/files/46691125526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6739/9575/files/osrs_clue_coordinates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/5052189084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9019/0248/files/tufoxopagafukageg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5294/0968/files/62784561788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7179/8424/files/agility_workout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2832/4257/files/waweg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/59272848928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0546/8068/files/dilifuvupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2324/3176/files/call_of_cthulhu_7th_edition_core_rulebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/nuxiwofenan.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 2

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_off00006985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6985 5432 bytes
SHA-256: 86be1867898804c9180fcd05f5b0315ede6a0a1255d1e724f32599ffa52a0f8d
font_01_sfnt_off00007be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE3 10248 bytes
SHA-256: 535ee57ef9b9b201bf43affbf22b8c2a8ae86b3e99d7247c9a01a6b2306f4731

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