Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a73e52acabc387…

MALICIOUS

PDF

55.7 KB Created: 2020-08-22 15:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dac41b73f062cdcbe4a2a84d5b79f117 SHA-1: 5a372485e45871af09525254173e70740735d160 SHA-256: 24a73e52acabc3876e25e12ce0d024bbb953dc48f80ec281cc6b8cb0197dcde6
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL, 'https://ttraff.cc/pify?keyword=shielded+metal+arc+welding+pdf', is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a link farm or redirection scheme. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=shielded+metal+arc+welding+pdf In PDF document text
    • http://files.unpsoccer.org/uploads/1/3/0/9/130969889/3353318.pdfIn PDF document text
    • http://files.makergirlz.org/uploads/1/3/0/7/130739564/05095d01439.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/1/0433/0687/7080/files/nalekubaserigudopen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8517/6736/files/74546172602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/pirirotafijaxuwirowubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6967/files/cheat_engine_6._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7708/2017/files/pinch_of_yum_chicken_tinga_sheet_pan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3359/8880/files/epic_seven_guide_to_6_star.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/35261336027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9579/1518/files/49942781321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7911/files/perixadugavaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0646/6982/files/punig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0961/3725/files/ruxus.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 7

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_off00009c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C15 5584 bytes
SHA-256: 2efc1d68b7ac8bd7509de643a03a9b24732baf3f81d0ae22b181e3f7fe131f15
font_01_sfnt_off0000aefe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEFE 10372 bytes
SHA-256: e7109cb01aa6f21ae60239e7ae88eac2c6d52a16f5faf607ae30117e8b21ad21

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