Malicious PDF — malware analysis report

Static analysis result for SHA-256 62acbdf9be6e38e2…

MALICIOUS

PDF

43.3 KB Created: 2020-08-04 01:36:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69cd7acf07cda878d07f73e4bbb1f05a SHA-1: 74fbe563bfc08c59f80228c4f13c1db2b2589163 SHA-256: 62acbdf9be6e38e2a122578824ec8f3ea04a0ad222a61e97f1e6955b2fdc7fc5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing for a redirector link to 'ttraff.com'. This indicates a phishing or scam attempt, likely using a 'free download' lure as suggested by the SEO link farm heuristic. The ML classifier strongly supports the malicious nature of this PDF.

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=usine+acide+sulfurique+pdf In PDF document text
    • http://files.vikkaszone.com/uploads/1/3/0/7/130738637/e812d.pdfIn PDF document text
    • http://files.canadianeducationforcongo.org/uploads/1/3/1/0/131070688/kopupusumaripev_pirekudebone_wupegojev.pdfIn PDF document text
    • http://files.moonlightcabins.com/uploads/1/3/1/6/131606405/dewoselomob.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/1/0431/7439/6063/files/83143471728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/70236514148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7053/5318/files/fundamentals_of_analytical_chemistry_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0836/0611/files/social_crm_strategy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/autonomous_vehicle_system_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6716/3302/files/zazuxukokowaromizulavosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5762/4726/files/the_one_ring_rpg_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/90435316792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5812/6245/files/amortissement_comptabilit_cours.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3105/1931/files/sulivovogunobukodobakujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4637/7374/files/17201421633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5757/7122/files/98519545316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/84844279301.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 4

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_off00006633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6633 5264 bytes
SHA-256: 73a9953125abaccffd53434832cc33bb702f9765cce40ffa5bd9a2c6148d03d1
font_01_sfnt_off0000782e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x782E 12440 bytes
SHA-256: 7f744a5420751786c2f4682c41076154c63a1ffb4867b6efb6443593c1811b0d

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