Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d374b2fd99c35ba…

MALICIOUS

PDF

42.8 KB Created: 2020-08-15 14:40:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca674452ea7cce072c7fedcf30ad9fac SHA-1: 3e464d789d54e7850cdbabb2bb024dc462f6284b SHA-256: 9d374b2fd99c35ba688d20c0ee6dffefb828bc88f7528e74384c421ddb641421
194 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier as malicious and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.com'. Another critical heuristic indicates a PDF link farm, with many links pointing to Shopify-hosted PDFs, suggesting an attempt to obscure the true malicious intent or to generate traffic. The document body contains a seemingly innocuous title related to music, but this is likely a lure.

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=latest+african+house+music In PDF document text
    • http://files.waterandseedhawaii.com/uploads/1/3/1/3/131380915/8611581.pdfIn PDF document text
    • http://files.sandlotolentangy.com/uploads/1/3/1/8/131871621/loxebemusibaveluku.pdfIn PDF document text
    • http://jegow.spicelandtown.org/uploads/1/3/1/4/131482975/rikule.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/1/0428/4222/6854/files/mafilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/dream_a_little_dream_of_me_chords_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/golare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5591/4918/files/get_smart_brian_tracy_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/8486/7736/files/android_application_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/72519686016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0490/3067/files/95810012005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/wabulapofometodezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2816/9375/files/cambridge_further_maths_textbook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8062/0963/files/how_to_play_music_on_discord.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 3

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_off00006a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A76 5028 bytes
SHA-256: b0b9bffc8efd9e7014384b31a6142a28185653af395bdeb103e21921917eb1b6
font_01_sfnt_off00007b60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B60 10368 bytes
SHA-256: 54abe25615f9f79d5dc9b8a9da08d260360a5d4d6884ff5e3976b51a37ed1a50

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