Malicious PDF — malware analysis report

Static analysis result for SHA-256 c98411c835809a7e…

MALICIOUS

PDF

40.8 KB Created: 2020-08-14 13:38:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ec04a4532c545d541abd1dcae973c44 SHA-1: 3e8c94c35b3070c1ca2549c8689ff43f5154e727 SHA-256: c98411c835809a7eba4dc6bffe9ffe38eca1d5fff0f80766c8b900720cf5470f
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, specifically pointing to 'https://ttraff.cc/pify?keyword=redistricting+game+answers+mission+3'. The document body, though heavily obfuscated, contains text that appears to be a lure for 'redistricting game answers mission 3', aligning with the redirector's keyword. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm intended to distribute malicious content or improve SEO for malicious sites. No scripts were extracted from this sample.

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=redistricting+game+answers+mission+3 In PDF document text
    • http://files.gillierdrainage.com/uploads/1/3/1/4/131437725/d06d3393fe.pdfIn PDF document text
    • http://files.dianeetatumwriter.com/uploads/1/3/0/7/130739809/3287217.pdfIn PDF document text
    • http://files.gmgaentertainmentproductions.com/uploads/1/3/1/4/131454052/2670412.pdfIn PDF document text
    • http://files.audreyartography.com/uploads/1/3/0/7/130775808/eca4ce6.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/1/0429/5265/5002/files/bufifaxemuferujavuziwonem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/13649775222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/titration_of_oxalic_acid_with_naoh_lab_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5091/0364/files/list_of_all_functional_groups_in_organic_chemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/72626797006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/mabasega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8758/4675/files/46005600050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2707/8052/files/teste_de_assertividade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6663/6953/files/3710091777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.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_off0000625c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625C 5488 bytes
SHA-256: 14c5b82e10fb5247ca895112eca3ef5da4b0a9172293a12f971ed49bf98f4268
font_01_sfnt_off00007501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7501 9688 bytes
SHA-256: caf545c2cf8bd10fae532a95d9cfa7a9ac1fdff0d92f7d4c3087639f973b434f

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