Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d890f33a743cc9…

MALICIOUS

PDF

75.7 KB Created: 2021-01-21 18:06:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: cf3fcff77699e8ccf6877127d1d3450b SHA-1: be5b597493ec04eff496cbd712433be7b93775b8 SHA-256: 58d890f33a743cc97767989e9c0e08a7625389bfbcdfa830efa7bda8866cc685
146 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan and an ML classifier indicating maliciousness. The document body, though heavily obfuscated, suggests a lure related to a product manual. The presence of numerous external URIs, including one pointing to 'traffking.ru', indicates an attempt to redirect the user to potentially malicious content or phishing sites. The heuristic 'SE_CALLBACK_LURE' further suggests a phishing context, possibly related to fake billing or subscription scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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) documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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?utm_term=defiant+180+degree+outdoor+motion+manual PDF link annotation
    • https://site-1175063.mozfiles.com/files/1175063/flying_monkey_jeans_size_31.pdfIn PDF document text
    • https://fikuvigobe.weebly.com/uploads/1/3/4/5/134582673/lokunokelaso.pdfIn PDF document text
    • https://site-1176664.mozfiles.com/files/1176664/50th_birthday_cake_ideas_for_mom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381090/normal_5fd7a60b078bf.pdfIn PDF document text
    • https://wejobufobugof.weebly.com/uploads/1/3/5/3/135348322/jorejadekige.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483075/normal_5fdf7201499e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418963/normal_5ff814a2ad93f.pdfIn PDF document text
    • https://sukuwakutas.weebly.com/uploads/1/3/4/6/134603616/368e3a6c199222b.pdfIn PDF document text
    • https://site-1168163.mozfiles.com/files/1168163/bally_s_executive_king_suite.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409801/normal_60045c55be339.pdfIn PDF document text
    • https://gotizede.weebly.com/uploads/1/3/2/6/132695714/170780.pdfIn PDF document text
    • https://site-1168007.mozfiles.com/files/1168007/pen_and_paper_icon_in_outlook.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496585/normal_5ffc863500f8f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fomabobas.epizy.com/catalogo_3_avon_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/39658241072.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/sizovubax.pdfIn PDF document text
    • http://zefixufedinokas.epizy.com/careless_whisper_remix_trap.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/american_heart_association_cholesterol_treatment_guidelines.pdfIn PDF document text
    • http://nibatozov.epizy.com/chamelephon_1._0_apk.pdfIn PDF document text
    • http://sowinoto.epizy.com/answer_key_in_mathematics_grade_10_module.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/facebook_adverts_manager_apk.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD315 5316 bytes
SHA-256: c1f30f58c3024771a9c70c79c98dbd386116baf89cfe6f35dc9487385870bfba
font_01_sfnt_off0000e50e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50E 2256 bytes
SHA-256: 1d0b5f6d3156a0063371645c306613a8fa915229f5c6b984e71fc00355ee8a6b
font_02_sfnt_off0000eecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEECB 10580 bytes
SHA-256: 2e3d41d3a31a445c15a214410abf31a6abbb8486359e268d6b6ab5ee685eb852
font_03_sfnt_off000112c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C5 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333