Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d609a97464f9ddd…

MALICIOUS

PDF

43.8 KB Created: 2020-08-13 23:46:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20e7f06868b11cdadd61b9e3050d0444 SHA-1: dc8a3d5430cac9fc85969838a6affd836c6698cc SHA-256: 3d609a97464f9ddd32c4cabb1738ea685c4b159bbb193e7668ad12d42d2e5cf2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, a common technique for SEO spam and phishing. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used in conjunction with a lure to convert PDF to JPG on an iPad. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL and other links that appear to be part of a link farm.

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=change+pdf+to+jpg+on+ipad In PDF document text
    • http://files.nobbysyoga.com/uploads/1/3/0/7/130739032/zuzaruzoda.pdfIn PDF document text
    • http://files.romehospitalfoundation.org/uploads/1/3/0/7/130775675/4011491.pdfIn PDF document text
    • http://files.freharrodcorporation.com/uploads/1/3/1/8/131856232/lisixip.pdfIn PDF document text
    • http://files.shannon-nightingale.com/uploads/1/3/1/1/131163867/6038873.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5719/2865/files/marbles_on_stream_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wesuwalaloluxafim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4260/9051/files/15101802428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3168/3484/files/animisme_dan_dinamisme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/75996693640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4054/6714/files/fakezunuxediludowifanik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4466/6529/files/73436100769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/79265304831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2202/3847/files/76519529038.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_off00005f98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F98 4884 bytes
SHA-256: d08f88d62ba1300d36698c838a060775ec0fe1b374e47cb14e08faa9cf04693b
font_01_sfnt_off00007038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7038 10636 bytes
SHA-256: 9f79fbfe1d80514154018e874d770959d08f303a03451650089260c9b781522b
font_02_sfnt_off00009498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9498 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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