Malicious PDF — malware analysis report

Static analysis result for SHA-256 243ac42bb9e6ac7e…

MALICIOUS

PDF

41.6 KB Created: 2020-08-02 18:58:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 185acc57e34572723b653e94f1f3132f SHA-1: 27e7cfcb772bb19856133b9733d8671e5d036077 SHA-256: 243ac42bb9e6ac7ea658e25e8c549b6430d42832fb1854a2c8c064875cb8493a
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a link farm with 28 external PDF links. One of these links, 'https://ttraff.cc/pify?keyword=bon+mot+meaning', points to a known malicious redirector. The document body itself is heavily obfuscated but contains this URL, suggesting the primary purpose is to lure users 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.cc/pify?keyword=bon+mot+meaning In PDF document text
    • http://files.skmagicpromotion.com/uploads/1/3/1/4/131438784/9125856.pdfIn PDF document text
    • http://files.jamiejordansings.com/uploads/1/3/0/7/130738607/4964679.pdfIn PDF document text
    • http://files.palmettomdpa.net/uploads/1/3/1/3/131379183/garijoperutifuxiliw.pdfIn PDF document text
    • http://files.knoxcountyrepublicans.com/uploads/1/3/1/4/131438202/92204330.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/1/0433/9276/2017/files/lusidiwabisunefez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/xikege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4294/7750/files/dozopewure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0428/1511/files/80508234753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2058/2050/files/72584842312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1016/9759/files/36673204417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9544/7970/files/61614182041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/paketopavaduvigexesivisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5725/6350/files/47857062568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/39895950624.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_off0000638c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638C 4748 bytes
SHA-256: 2c165369a040a36a649dddd073b0019a3143dcfc92b9264ff985859a41800f25
font_01_sfnt_off000073a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A0 11440 bytes
SHA-256: 9a5c84c5ada132e211173d2c4aed52e2c72d23c9ba183fe4e5d69bd80fd7f189

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