Malicious PDF — malware analysis report

Static analysis result for SHA-256 8692620fef3073c8…

MALICIOUS

PDF

40.6 KB Created: 2020-08-11 21:50:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3733805ccae8070b74e847fc6603579f SHA-1: 2363279811da640d77182c8d5611383f55fcd2a1 SHA-256: 8692620fef3073c896cf00aed0d25a3f980c5da6057ce8e442e44f58ae4ece9d
194 Risk Score

Malware Insights

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

The PDF document contains a link farm and a redirector URL, indicating a phishing or malware distribution attempt. The embedded content suggests a lure related to an 'answer key', and the ML classifier strongly flagged this PDF as malicious. The primary malicious URL identified is https://ttraff.cc/pify?keyword=abiotic+vs+biotic+factors+answer+key+pdf, which is likely used to redirect users to a malicious site.

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=abiotic+vs+biotic+factors+answer+key+pdf In PDF document text
    • http://files.christchurchdayschoolmtp.org/uploads/1/3/1/4/131453989/2428203.pdfIn PDF document text
    • http://files.bioengcoll.org/uploads/1/3/0/7/130775032/fagip-vodex-xipirokudaxu-nomijivigun.pdfIn PDF document text
    • http://xonur.lh4biz.com/uploads/1/3/0/7/130739777/bafavave.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/1/0435/9651/3448/files/36648211854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4379/9719/files/peliculas_mega_1k.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/enhance_shaman_pvp_6._2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0400/1443/files/aadhaar_based_biometric_attendance_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3398/4157/files/french_to_english_translation_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5238/1846/files/64316820720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3882/6918/files/jabixupozakipodutusivaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/importance_of_vehicle_tracking_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/piporupekifobexulig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/fusedexuzar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4302/7104/files/jazog.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 3

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_off00005e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1C 5564 bytes
SHA-256: f85abc3589ee2f8443b46968a058a75de15eef9b4471a544e8a417d3e81adba6
font_01_sfnt_off00007125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7125 10680 bytes
SHA-256: b387d4ba4fe90d0b324953c83d5756da18c197f15dfe6d09e6e9a8aa3809183d

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