Malicious PDF — malware analysis report

Static analysis result for SHA-256 f65ad9f5347fcacf…

MALICIOUS

PDF

95.2 KB Created: 2021-03-18 21:39:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f56447f50bbc7d0ed416c13ac0904af3 SHA-1: 246b0d710174d0fb2383e79053e2091032ebacbb SHA-256: f65ad9f5347fcacfac4b710cd988971bf543f1bbb26a2123a3ccb8df6e733fe1
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating it is a phishing or trojan PDF. It contains numerous embedded URLs, with a primary suspicious URL being https://zajinet.ru/award?keyword=non+tariff+barriers+to+trade+pdf. The PDF structure and embedded content suggest it is designed to deceive users into visiting malicious links, likely to download further malware or steal credentials. No scripts were extracted, but the PDF's nature points towards social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://zajinet.ru/award?keyword=non+tariff+barriers+to+trade+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481518/normal_5fd2d251c2884.pdfIn PDF document text
    • http://wide-do.top/patufirokawuni3lhib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460680/normal_5ff4a110e8da0.pdfIn PDF document text
    • http://xobaxibudizoba.22web.org/seramewivagobawawuka.pdfIn PDF document text
    • http://coolvdomaion.online/25464070255wd3um.pdfIn PDF document text
    • http://ronifibofizet.medianewsonline.com/how_many_carbs_are_in_a_vanilla_chai_latte.pdfIn PDF document text
    • http://matroskin.space/donut_template_powerpointnrz0x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417834/normal_60420bd341d0e.pdfIn PDF document text
    • http://gobofan.iblogger.org/suzeliwezadedanapi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374848/normal_6017030b1b699.pdfIn PDF document text
    • http://kawibijew.22web.org/kamasuwamezuwelipe.pdfIn PDF document text
    • http://classkaod.ru/lebojegisigosepulogunhypvv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483103/normal_60160ad5e77d5.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://xupafokivudaked.rf.gd/drop_2_3_chords.pdfIn PDF document text
    • http://pinezininefos.epizy.com/market_analysis_report_format.pdfIn PDF document text
    • https://78fa80b2-8629-447b-ad63-53e91e8d4948.filesusr.com/ugd/8f02de_52bdbdb6ab6d4885ab5fa1af5bfb9cda.pdf?index=trueIn PDF document text
    • https://fad58b31-c538-4d3f-828d-7998eec853b9.filesusr.com/ugd/7e6083_f2a670ddc07a40b091e6c5613ad73b3b.pdf?index=trueIn PDF document text
    • http://vaterojot.epizy.com/budget_deficit_financing.pdfIn PDF document text
    • http://laropijodozu.epizy.com/kenyan_temporary_passport_application_form.pdfIn PDF document text
    • https://75cc4b12-69da-4024-8422-75f9303faa99.filesusr.com/ugd/d6c222_b2a647cf8ec44529a4a46c086de8c8e1.pdf?index=trueIn PDF document text
    • http://pizuzol.onlinewebshop.net/icom_ah_4_antenna_tuner_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001296c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1296C 4900 bytes
SHA-256: 704e2ba7eb048ec953907914f5f7726554ac21c7c2685ed78362364670b50138
font_01_sfnt_off00013a14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A14 11548 bytes
SHA-256: 5e1e1524fed55f329c1f9107968d8158e9ee7f6838b61d897cc069808ddf02c5
font_02_sfnt_off0001616c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1616C 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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