Malicious PDF — malware analysis report

Static analysis result for SHA-256 7235170df92ba5bf…

MALICIOUS

PDF

49.1 KB Created: 2020-08-15 09:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f690ee117081cd04722b201cbe350ab SHA-1: 4c4333a8db92990cdcbe97dbaf4f082e3fb722ff SHA-256: 7235170df92ba5bf1319ac880b7d2bacdd11c5488dbfd0b8af2ccff4621f1d70
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body and heuristics indicate a link farm designed to trick users into downloading PDFs, likely as a lure for phishing or malware distribution. 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.cc/wb?keyword=summa%20contra%20gentiles%20deutsch%20pdf In PDF document text
    • http://jeleku.margek.com/uploads/1/3/1/4/131453284/nomuderofixumomafidi.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/1/0432/9517/8902/files/obx_surf_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1987/9068/files/mufaxenufomelapevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7485/3793/files/taurus_millennium_45.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/ginadazexam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5036/8152/files/45735167834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/clinical_examination_of_farm_animals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7691/9200/files/applied_psychology_in_human_resource_management_8th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/2706/7043/files/learn_french_for_beginners_through_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/certificate_of_appreciation_for_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9825/8088/files/akron_rubber_ducks_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/bhagavatam_telugu_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0475/5096/files/ponurorakodasejarimafex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5700/5215/files/91762942006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2669/3789/files/rebomopefoned.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/dawuferu.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 1

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_off00007e2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2C 5672 bytes
SHA-256: 781ec15aaf4b07784e8f21aef37e93a5bd57973fd8c371f3c5405c19a79dd01f
font_01_sfnt_off0000913c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x913C 11336 bytes
SHA-256: daa9f6d29d23bd9ac7c8ba3267d29f186119f22894430f8755dff165765a2bb2

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