Malicious PDF — malware analysis report

Static analysis result for SHA-256 6975848313ee08ef…

MALICIOUS

PDF

39.9 KB Created: 2020-08-18 19:30:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c063d0fbe833137360985a5c3d7238fc SHA-1: ae90c3b3dfb8307dd8c0ad1887852f386b084725 SHA-256: 6975848313ee08ef2f56fdf75f2cc40f3f80b74fbed7eff43be1bb08dda87296
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to redirector infrastructure like 'ttraff.com', which is flagged as malicious. The document body, though obfuscated, contains text suggesting a lure related to medical information, combined with the 'wkhtmltopdf' authoring application, indicating an attempt to disguise the malicious nature. The ML classifier strongly supports the malicious verdict.

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=d+n+a+full+form+in+medical In PDF document text
    • http://kajafadab.alexandrakcooper.com/uploads/1/3/1/4/131453574/pasevixeda-ledulisaker.pdfIn PDF document text
    • http://files.10sided.com/uploads/1/3/2/6/132695416/7f5e4b3917.pdfIn PDF document text
    • http://files.reframephx.org/uploads/1/3/0/7/130776542/dupuvowime-sujen-bifujigar-kujubojo.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/godikuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6123/9192/files/82777382351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/kopifevoxepuxovux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9394/0641/files/76678907824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/68367141015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1677/6868/files/93132116706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4912/3993/files/pojenogujikamopupoxudix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0805/files/61858623017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/37226168124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/aha_stroke_guidelines_2015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5952/8355/files/roper_washing_machine_manual.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_off00005fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD6 4988 bytes
SHA-256: f3aa03c9d408db65f905494751d4d3be2d9a84ddd9ff769f70c6f71a6b2e1652
font_01_sfnt_off000070b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B5 10140 bytes
SHA-256: 31d90c6e0235b375e53210d514bc6bda49fd5f80327a0118caa196334253e11e

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