Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea8ad1ca535067f…

MALICIOUS

PDF

41.7 KB Created: 2020-11-08 19:14:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: e0df5b5505d61f7f73e658c8d55b3c18 SHA-1: 3cbfa6f0e1e1b0649ea1850073c4bd3b2aa8a452 SHA-256: eea8ad1ca535067fa1f8d876c0ebbad24bc77417622e1d31f9793d5455700be4
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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/123?keyword=2010+mitsubishi+lancer+repair+manual In PDF document text
    • https://mivetemadika.weebly.com/uploads/1/3/4/4/134471856/9627450.pdfIn PDF document text
    • https://donibirumot.weebly.com/uploads/1/3/4/4/134463545/mimog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377935/normal_5f97d202c87b3.pdfIn PDF document text
    • https://kasukironumasex.weebly.com/uploads/1/3/1/4/131454791/25fe51e737a.pdfIn PDF document text
    • https://duvujisukodat.weebly.com/uploads/1/3/4/6/134674851/30b2dec66ce5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://pugujemeb.files.wordpress.com/2020/11/hostinger_mx_records.pdfIn PDF document text
    • https://pexabubexofo.files.wordpress.com/2020/11/que_es_un_angulo_alterno.pdfIn PDF document text
    • https://gapedivo.files.wordpress.com/2020/11/fibekijofinodon.pdfIn PDF document text
    • https://rezekine.files.wordpress.com/2020/11/tatojesanawav.pdfIn PDF document text
    • https://gigudixaxi.files.wordpress.com/2020/11/xekefetadejafegiruti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a62245c2-b9a6-4484-97f6-486cc42e3535/mufesij.pdfIn PDF document text
    • https://kiwowet.files.wordpress.com/2020/11/call_of_duty_black_ops_mods_ps3.pdfIn PDF document text
    • https://tokirinaxub.files.wordpress.com/2020/11/lulevuwu.pdfIn PDF document text
    • https://lugeraropeva.files.wordpress.com/2020/11/17809607452.pdfIn PDF document text
    • https://vuxuwavu.files.wordpress.com/2020/11/76309888565.pdfIn PDF document text
    • https://gatubatixaj.files.wordpress.com/2020/11/hospital_accountant_job_description.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_off0000626b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626B 5544 bytes
SHA-256: d73d4b1059d34a7032cae95214e0296df478c079f3b9b651f19775afeef7f75a
font_01_sfnt_off00007516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7516 10652 bytes
SHA-256: 1e7448f5d0d1188b8be942a8014b6ffcdd8d0532063ed16e99f1d6a3af2be643

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