Malicious PDF — malware analysis report

Static analysis result for SHA-256 b308d15d5c043531…

MALICIOUS

PDF

55.8 KB Created: 2020-08-18 15:57:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9be44265ef21bcc8648de459ad0d1472 SHA-1: 87cf366e1cf27eb30b55119abadbaa72113542d6 SHA-256: b308d15d5c0435311fc7df9241d6fa65447ab39bd79802c17c2f95c818228682
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is embedded within the document body, disguised as a practice test answer key. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary intent appears to be redirecting the user to a malicious site via the ttraff.com URL.

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=density+and+buoyancy+practice+test+answers In PDF document text
    • http://files.alexjtunney.com/uploads/1/3/1/0/131070317/mapex-limukadixajoz.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/1/0437/8404/4705/files/92064980525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5653/7493/files/bladderscan_bvi_3000_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/spatial_data_analysis_by_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6594/1922/files/tojijepixikawuvodojubat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8944/3493/files/bts_world_game_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6104/1559/files/no_other_women_full_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/autocad_mechanical_drawing_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3885/1751/files/92505096198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8380/9447/files/34467315454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4999/2870/files/46702667928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1892/3686/files/materi_sistem_pencernaan_manusia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/ripoxuzufetavemumawubali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/roth_ira_irs_form.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_off00009159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9159 2828 bytes
SHA-256: 3b89a1333aa93e194de12c5c5da229a8f3a969ace6b07a90c5323b9ece6747ec
font_01_sfnt_off00009b54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B54 5368 bytes
SHA-256: 7bb0457f7390dab7cc4b9c2163a9d6dfefafd960be4fffefb7acdb3d18b2e86b
font_02_sfnt_off0000adad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADAD 9932 bytes
SHA-256: a68aae14ce65269761a6c01b5cb5a7799d2b17e04016204dd85cb97a2de86dd1

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