Malicious PDF — malware analysis report

Static analysis result for SHA-256 681a38dc73ae4c22…

MALICIOUS

PDF

46.2 KB Created: 2020-08-03 10:52:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56c922224208d528ccb404f0739676f4 SHA-1: 5e633a0bb72e30c249c917f28b9e292aec900e69 SHA-256: 681a38dc73ae4c224ea740f101dfd9f4cf1b2ab9e214425b5adb40438f7fa837
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, including a redirector at 'ttraff.com', suggesting a phishing or malware distribution attempt. The document body mentions 'American red cross lifeguard manual pdf', likely a lure to encourage clicks. The presence of multiple PDF links and a redirector indicates a link farm or SEO poisoning tactic to drive traffic to malicious sites.

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=american+red+cross+lifeguard+manual+pdf In PDF document text
    • http://files.annagalatirealtor.com/uploads/1/3/0/7/130776718/979473.pdfIn PDF document text
    • http://files.silkenfest2017.com/uploads/1/3/1/3/131383342/00507d6f2a50.pdfIn PDF document text
    • http://files.kennel-midepra.com/uploads/1/3/1/4/131437377/vukigufusural.pdfIn PDF document text
    • http://files.thegardentoronto.com/uploads/1/3/1/4/131482941/nuluvopugonumebudo.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/1/0431/1970/6269/files/fosubazosufelamikojiled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1504/4245/files/vanut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/84700432679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/37761473473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/gemivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9453/1493/files/maxudumewajirowiribuwov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luzugojozawok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0937/4365/files/gexidakopenikojavet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/bavogoluve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9482/5376/files/penugun.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_off0000763e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x763E 5464 bytes
SHA-256: 7884724f3f73b452c9ae4c99db152d4f7fecb7633c1a9b369b36c68a5c8d0050
font_01_sfnt_off000088c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88C3 10332 bytes
SHA-256: 69a94cc8dbb55528b1f1a74a8586aaa5fcd22e43718df55ec3f5df7265704664

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