Malicious PDF — malware analysis report

Static analysis result for SHA-256 120e68dc3fdd7859…

MALICIOUS

PDF

78.2 KB Created: 2021-03-29 00:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b930f5466faf119857b0539aff43170b SHA-1: 1ef6dfe7d39104d356d43c75d07f5049c83a30d0 SHA-256: 120e68dc3fdd7859795f4172129990dccb7762077b579c5881cb0419ae6665e9
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'resalured.ru' and another to 'gifavojam.scienceontheweb.net', suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains keywords related to employment and pay, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/strik?utm_term=storyboard+artist+pay+in+canada PDF link annotation
    • http://gifavojam.scienceontheweb.net/list_of_adjectives_with_meanings_and_sentences.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421050/normal_60521e7bb7c5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462730/normal_604507abcbbaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491933/normal_5fdb9e3955835.pdfIn PDF document text
    • http://katipef.medianewsonline.com/how_long_do_beats_solo_last.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476443/normal_5ff7e95bc4aa6.pdfIn PDF document text
    • http://texewofe.22web.org/ratumet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486037/normal_6035708f8ce7e.pdfIn PDF document text
    • https://cdn.sqhk.co/karapenakozi/iiieidX/57697437477.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465274/normal_604671828c0b7.pdfIn PDF document text
    • https://cdn.sqhk.co/bopelara/ihhhiaL/smartsheet_stock_forecast.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/gchdjaG/lolegafofapolad.pdfIn PDF document text
    • http://wotukujis.sportsontheweb.net/navien_npe-180a_spec_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/xivomojuf/Hiihj6a/zasosepifopofovolenigad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383445/normal_5fecc0739c52e.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/cjcggNn/magic_castle_piano_tiles_apk.pdfIn PDF document text
    • http://kulokozataxat.22web.org/information_about_carting_order.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pijularof.epizy.com/59913262028.pdfIn PDF document text
    • http://gemunedipu.rf.gd/safety_glasses_sign.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/remavubokulazoga.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/genuine_apple_iphone_5s_silicone_case.pdfIn PDF document text
    • http://nifusotajezunur.atwebpages.com/nanosenorupejudoroni.pdfIn PDF document text
    • http://lemujiv.epizy.com/10630046727.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_off0000f47d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47D 5380 bytes
SHA-256: 7a4afb1698b809cdc61ffc0a24c787472676a00c503768ee13a9c7239eea1085
font_01_sfnt_off000106d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D6 10720 bytes
SHA-256: a9b25b26984cdefad9f4dd4fb3eb6ccaf40e4451d4c40c9635411e3df6042372

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