Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9eaf3bd8defd1c3…

MALICIOUS

PDF

35.2 KB Created: 2020-08-03 15:52:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 424887c98be8e5c59cc2842f29975741 SHA-1: a381ea9c076cfcae12d88e7417154cf2d1d1ac0e SHA-256: b9eaf3bd8defd1c3c4b9cb4a7f6957c7c5d8ee82f57e37e393c3026651140661
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs hosted on various domains, including a known malicious redirector. The primary malicious link, https://ttraff.com/pify?keyword=abc+tracing+paper+pdf, is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to this URL and other PDF files, suggesting a link farm or redirection tactic to obscure the ultimate malicious destination.

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=abc+tracing+paper+pdf In PDF document text
    • http://files.coonambleagfieldday.com/uploads/1/3/1/4/131454355/5072397.pdfIn PDF document text
    • http://files.susanbrumfieldmusic.com/uploads/1/3/1/6/131637307/batekutujago_sunaxegasip_jugogilubor.pdfIn PDF document text
    • http://files.theghostdidit.com/uploads/1/3/1/8/131860204/japemesudetamitane.pdfIn PDF document text
    • http://files.quiknfresh.com/uploads/1/3/1/4/131437174/vebukuse_surikubetonivuv_firij.pdfIn PDF document text
    • http://files.truvuwindows.com/uploads/1/3/2/6/132681233/9320541.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/1/0432/6332/8424/files/rizak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/tamosebadositil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6166/5192/files/25880987257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5196/4830/files/86269207461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0611/6511/files/ziwunilew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1681/2706/files/molecular_thermodynamics_mcquarrie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jonamov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1145/5645/files/79325452011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5461/files/zokadagazal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/texavenelapisavak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8022/8759/files/software_requirement_documents.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_off00004c88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C88 5244 bytes
SHA-256: 8ed965d02b3078c7079f2670cd330cc8d086eaf5626238f1b1ab32876124af2a
font_01_sfnt_off00005e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6B 9812 bytes
SHA-256: 79490ecd5603e1c81553a4c0b53687a7088ebe2315e7fb8e01c032444f39206a

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