Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a8678c2e3d67317…

MALICIOUS

PDF

39.8 KB Created: 2020-08-24 02:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c4d949e38852ee83f4be6be070aacff SHA-1: a6a982d14a0334687cd3833ce09616a861653cd8 SHA-256: 6a8678c2e3d67317e3792414abd1bfb998ccff9e276e164bd5fda91ced13f3f0
194 Risk Score

Malware Insights

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

The PDF contains a lure for a "certificate of insurance form free" which redirects to malicious infrastructure at `https://ttraff.cc/pify?keyword=certificate+of+insurance+form+free`. The document also contains a large number of links to external PDFs, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. No scripts were extracted, but the presence of redirector links and the ML classifier output strongly indicate malicious intent.

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=certificate+of+insurance+form+free In PDF document text
    • http://nirarasu.santosmiller.com/uploads/1/3/2/7/132740435/2956856.pdfIn PDF document text
    • http://benusapi.yvonnegordonmoserart.com/uploads/1/3/2/8/132815758/mapagufaboj.pdfIn PDF document text
    • http://files.oakridgefootballbooster.com/uploads/1/3/0/8/130873718/jivosipipofe.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/1/0437/8827/1773/files/92106288073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3403/1766/files/gazalufisiwefeperizuxaguj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2074/6906/files/road_safety_awareness_programme_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4192/9886/files/event_id_4624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5545/6164/files/xakapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/banking_terms_gradeup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0145/4496/files/13285903133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0488/6166/files/97874952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6474/4343/files/classifying_rational_numbers_worksheet_lesson_2-_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9115/5361/files/49232482492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/51393882477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4475/6901/files/vocabulary_games_and_activities_1_vk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/susogafewikosuwenanixonog.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 5

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_off00005fff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFF 4900 bytes
SHA-256: 93313f91e4a954ce33355dad5b4bcabfcb57b38b76caa6beefc6b8e692c21573
font_01_sfnt_off0000708a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x708A 9876 bytes
SHA-256: d0d1e161d785c73afb65d85ce9d89d6b3f4a2895d22ca8fa6468440ade1abece

Open this report in the interactive analyzer, or submit your own file for analysis.