Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e604f9363553cdf…

MALICIOUS

PDF

44.2 KB Created: 2020-08-05 05:32:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c6e6740d43f358a329d7e183dc02989 SHA-1: ffe84973cf6660a5a48eb0b50a2cae1a90b67a66 SHA-256: 2e604f9363553cdfda779c9cebed1eff27f227f3995c61ca2285f9894ce2a888
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=fundamentals+of+metal+cutting+and+machine+tools+pdf+free+download'. This URL is presented within the document body, disguised as a free download for a technical document. The presence of a large number of external links, many hosted on Shopify, suggests a link farm designed to improve SEO for malicious content. 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=fundamentals+of+metal+cutting+and+machine+tools+pdf+free+download In PDF document text
    • http://files.specialdayllc.com/uploads/1/3/1/3/131383743/8d3cfecd.pdfIn PDF document text
    • http://files.mosaiclodge176.ca/uploads/1/3/1/3/131398547/botolaxer-fegatelaxoparut-daworu-xuzufa.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/1/0430/5806/9655/files/97135439401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7300/1877/files/lemegilita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5193/2056/files/31817387915.pdfIn PDF document text
    • http://files.armen.people.ua.edu/uploads/1/3/0/8/130814052/f08af2562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/gepinukozolaxuximomuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6843/2288/files/ncaa_football_12_rosters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/96287470137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7165/9414/files/38095851766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/63239118135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3093/6732/files/sulidemobukajokebuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9642/5119/files/44248656324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4775/3640/files/jizeduxunukenakote.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000585a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x585A 5616 bytes
SHA-256: 28e62e260ebe8dbf70ae66089ebdd1df34c1920d60b558da2b54f5243554ee94
font_01_sfnt_off00006b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B59 2116 bytes
SHA-256: 2d35fe1b112251630f6c3e185fb4bf58c6327cea99f60afab3ca0473214b5b30
font_02_sfnt_off00007525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7525 14976 bytes
SHA-256: 5431b9191cc7950643088d613be379b1f741b2fc3102dc281bd7d0ba9edc52a1

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