Malicious PDF — malware analysis report

Static analysis result for SHA-256 8601e3c7313114af…

MALICIOUS

PDF

45.9 KB Created: 2020-08-21 14:11:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b7a9e6a5d6e70df389517af99cff023 SHA-1: bd19ed8c744a8cf0dc0c29a43a736e16b1378ac0 SHA-256: 8601e3c7313114afd121c67ba615ca307404cff1e8d10a704eb046c0a3595966
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to redirector infrastructure like 'ttraff.cc', which is flagged as malicious. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to lure users with promises of free downloads. The ML classifier strongly indicates maliciousness, and the presence of redirector links suggests a phishing or malware distribution attempt.

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=assembler+jpeg+en+pdf+mac In PDF document text
    • http://bufifeb.aalumber.com/uploads/1/3/0/7/130776493/vazixaxegel.pdfIn PDF document text
    • http://files.rileycountycommunityneedsassessment.org/uploads/1/3/1/1/131164211/c024ed8.pdfIn PDF document text
    • http://files.claregriffin.org/uploads/1/3/0/7/130776519/juwoseropeziw_xotusizo_lixarixiwav_wuwovikofi.pdfIn PDF document text
    • http://zogineje.mobilephlebotomynorthcarolina.com/uploads/1/3/1/4/131406390/xifutaxolatago.pdfIn PDF document text
    • http://files.bigloveletters.net.au/uploads/1/3/1/4/131453036/41e2cb451d1.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/1/0434/5567/6568/files/60993824925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/mubuwagudulaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/43718615549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6318/0438/files/zumdahl_chemical_principles_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4539/5359/files/sipojamefux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2607/8106/files/corrugated_paper_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/starting_a_coffee_shop_business_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2486/5685/files/convert_mixed_numbers_into_improper_fractions_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4950/8250/files/zedaviwidoropuposarifar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4319/0946/files/accounting_information_systems_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/20732345455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3453/files/demand_driven_material_requirements_planning_ddmrp.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7455 5680 bytes
SHA-256: b733a859fe3b8a7e99ab93175bf2fbe49fe05cdcbfbfa09b4438d62cdd90dc10
font_01_sfnt_off00008784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8784 10212 bytes
SHA-256: fcc5d5cfb2dfe9c3af31b2c3ac67ad906be1ea993b11798c8f34a3570e2ca082