Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa4c430a05e0eb26…

MALICIOUS

PDF

35.4 KB Created: 2020-11-08 04:55:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 2198b7c65210e410ecf8333f666db9e7 SHA-1: c54390ab3c3353ce9373ce57bcf43af760e9ee98 SHA-256: aa4c430a05e0eb26a87d661f9824a7d6475098e9211152b1051149af237dde0a
144 Risk Score

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://traffking.ru/aws?keyword=armando+perez+state+farm+agent In PDF document text
    • https://lavigumujow.weebly.com/uploads/1/3/4/4/134438710/wukovugipim.pdfIn PDF document text
    • https://xekexudaxojow.weebly.com/uploads/1/3/4/3/134365032/3273660.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/kupidigub_vaxegapoxid_nilomejix_zosupagutogapu.pdfIn PDF document text
    • https://wubawujol.weebly.com/uploads/1/3/4/2/134266052/5054570.pdfIn PDF document text
    • https://fevixivosetakub.weebly.com/uploads/1/3/2/6/132681861/vilodex.pdfIn PDF document text
    • https://bolififona.weebly.com/uploads/1/3/4/3/134316640/d150d9d.pdfIn PDF document text
    • https://pesajupamobe.weebly.com/uploads/1/3/1/6/131607203/vazodomaveju.pdfIn PDF document text
    • https://pobezewimo.weebly.com/uploads/1/3/2/6/132681951/luvigerovun_potapuriredakij_meralujawumuju_dewokumufe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dd50925-332d-42dd-8575-612aa87e2fd0/unfair_mario_unblocked_for_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63c8941d-f887-4fd2-afce-2cd5822dd84b/64575480337.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dbd933e-8fd0-4913-a4a3-b679891d4f3f/14498165692.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_off00004ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA2 5368 bytes
SHA-256: 34880a49835202d50e93060dee8182929f9d67204aa6c59be8ff4bbfb722896b
font_01_sfnt_off00005ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED4 9924 bytes
SHA-256: eb3440fddf7dc422a5f66dadc0ba3f69686ee0e708945ee394f954a5b806c61a