Malicious PDF — malware analysis report

Static analysis result for SHA-256 b55807b8eae3bbbc…

MALICIOUS

PDF

36.6 KB Created: 2020-08-05 08:22:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c404d447897622895f28f05b0d1364b0 SHA-1: 24f17d57c9dd33e494df7089091c8ede7ac3e7cd SHA-256: b55807b8eae3bbbc09fe42762193820f4df91bc1611e46b20a82ca161f69fb8d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic firing indicates a direct link to a known malicious redirector at 'ttraff.cc'. The ML classifier also strongly flagged this PDF as malicious. The presence of numerous links suggests a phishing or malware distribution attempt, aiming to redirect users to malicious content.

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=conversations+with+isaiah+berlin+pdf In PDF document text
    • http://files.heavenlychurch.com/uploads/1/3/0/8/130874296/63bfda602a6e638.pdfIn PDF document text
    • http://files.thisauthentichome.com/uploads/1/3/2/6/132681153/0f71bec98515b.pdfIn PDF document text
    • http://files.mccnresources.org/uploads/1/3/1/3/131380177/3fff6e9f684c.pdfIn PDF document text
    • http://gapigole.nextlevelcaresolutions.org/uploads/1/3/1/0/131070152/4ee41047fe3ea9.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/1/0437/2722/4986/files/minecraft_wwe_skins.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9690/6659/files/21_day_smoothie_diet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8904/3362/files/epson_wf_3520_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/39885135330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2125/4312/files/gakeponatujum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/julinonivuvonavosikas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3003/6123/files/canela_de_velho_dosagem_usual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7217/5784/files/jojofujofipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3136/2725/files/path_environment_variable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/liwaniwebutitakuxewunoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/xovojuxijutisenifonam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6540/1753/files/tobijazade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32150460784.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 2

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_off000051b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51B4 5328 bytes
SHA-256: 54ee22fa964f841ffb096cada027e297df031ae3a472a0798bfca90ea1eb6b3d
font_01_sfnt_off000063d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D7 9812 bytes
SHA-256: 1ff8765ab3127f13d1d421bd25a4c5fc194a3cf1964fa7fd418eef55d74fbf65

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