Malicious PDF — malware analysis report

Static analysis result for SHA-256 9037fcf62147d961…

MALICIOUS

PDF

40.4 KB Created: 2020-08-03 10:22:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7a1dcdb0b182a8177a558572a021fe7 SHA-1: d82a580da37cc9f7565381ac80c0c3468b082802 SHA-256: 9037fcf62147d961df2937924493e8d7cabc072147b053473ace802bf112ce4d
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a compiler design book download. The link redirects to `https://ttraff.cc/wb?keyword=compiler%20design%20book%20ullman%20pdf`, which is flagged as malicious. The document also contains a large number of external PDF links, many hosted on `cdn.shopify.com`, suggesting a link farm or SEO poisoning tactic to distribute the malicious URL. No scripts were extracted, and the document body is heavily obfuscated.

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/wb?keyword=compiler%20design%20book%20ullman%20pdf In PDF document text
    • http://files.beyondtolerancewichita.org/uploads/1/3/2/3/132303338/be610c62aef02eb.pdfIn PDF document text
    • http://files.episcopalclaycenter.org/uploads/1/3/2/6/132695535/mewexukiwu.pdfIn PDF document text
    • http://files.vanfiretrust.org/uploads/1/3/1/0/131071297/70af7836.pdfIn PDF document text
    • http://files.sukhi.no/uploads/1/3/1/1/131164442/5461426.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/1/0432/2308/9307/files/32303279360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/49058802289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/gisumosep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6105/9482/files/paluzig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/77472689840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/2923335228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/30976338067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3259/8938/files/vinyl_world_651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6617/1296/files/mudupuxugazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/pereb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8250/5628/files/mortal_kombat_2_moves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3797/4950/files/74009766616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1999/2222/files/ramerelevekepuxof.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6A 5472 bytes
SHA-256: 1c809d6e0faf010d40ec513ca2850296de3ca3b821139b537fefe7ff25d988b4
font_01_sfnt_off000070e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E6 10472 bytes
SHA-256: 700c0e934bd6addbf58235f6a3653a90b33566bae7450ba5c8d42f020e999b95

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