Malicious PDF — malware analysis report

Static analysis result for SHA-256 efa6c62daac1324e…

MALICIOUS

PDF

37.2 KB Created: 2020-08-01 11:35:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0303afea9b48f8a61ae57fb2ea8b7c03 SHA-1: 55b36df8f7dd4fb3b3748e06dc0e5735107907fe SHA-256: efa6c62daac1324ecedb1e25bb6b227a92327a3fd351a84893d5881c4151c6e8
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily corrupted, contains text that appears to be a lure for a 'whirlpool dryers manual'. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The primary malicious IOC is the redirector URL.

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=whirlpool+dryers+manual In PDF document text
    • http://files.jmichaelmiller.org/uploads/1/3/0/7/130739719/50db7.pdfIn PDF document text
    • http://files.luismojica.com/uploads/1/3/1/6/131606803/difowamabitukibe.pdfIn PDF document text
    • http://files.wargametransfers.com/uploads/1/3/0/7/130740591/cd0d36d.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/1/0431/8055/6452/files/77716161908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/zevukenabexafej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/80709112462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/kijifomel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1067/7141/files/walmart_community_grant_application.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/jobasaxujamosowanekoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99231100330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0102/8503/files/47992435942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7373/2769/files/89039357936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7075/7795/files/php_str_replace.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/63114841461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2023/7475/files/48486043671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4882/7040/files/diminawoduvupejekimuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3258/4098/files/3121424655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67257536452.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_off00004f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F8B 5312 bytes
SHA-256: aa84a77226f9252447cc44248ec905aacc3fce94dc6b7d03a51c6d08212ad409
font_01_sfnt_off0000617c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617C 12028 bytes
SHA-256: fb8a5178ac0de9473e9c3d1ac219bca48f23b5334f6c607cb715685ee4c3bb30

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