Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ebce02cf31a8769…

MALICIOUS

PDF

44.6 KB Created: 2020-08-18 22:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 109fce8ee6372857cbc4d3bc4b714b76 SHA-1: 5959891f5b2c588ccd27fab222f54045ef0f6020 SHA-256: 8ebce02cf31a87691791e9f6a964929e8b0c30f9c20117e0518b464019184e50
202 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector (ttraff.com). The document body, though heavily obfuscated, contains text related to 'Starbound game free' and a call-to-action phrase, suggesting a lure to trick users into clicking the malicious link. The presence of a visual download button heuristic further supports this attack pattern. The file is likely a downloader or part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=starbound+game+free In PDF document text
    • http://files.ksouba.com/uploads/1/3/1/1/131163846/331d4c0f78c0.pdfIn PDF document text
    • http://kawiroset.delaneysalonscoppell.com/uploads/1/3/1/6/131637836/sutotinekev.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/1/0431/9094/3904/files/xazuxat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2581582401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7141/3151/files/ashrae_standard_70_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/84641591148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/baganuvekobirupatemobosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4750/8385/files/jesafavowoxuzikajutarev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0510/8636/files/15514504007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75320426607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/63618037505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6801 5260 bytes
SHA-256: 5b946bce99fc8d0a14c3aaf1e5431dab7c566f3e102c5f692d16bbbf24e5fb2d
font_01_sfnt_off000079bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79BB 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00008249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8249 10344 bytes
SHA-256: 2650699d83f004e95552de9b85ec241856879758f7ecf4aac97d455e2ff74b2e

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