Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3faa122f9f3653f…

MALICIOUS

PDF

72.9 KB Created: 2021-02-15 00:40:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f39417c9af680fc95f13af1bc328ef6a SHA-1: 27bf079e0b48a781cd27d8f2a24731a8fbfc348c SHA-256: f3faa122f9f3653f04973968bb133b54a53b8de4d0ca1f2a4c87e1e5936f08ae
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to 'seumenha.ru', which is presented in a context suggesting a lure for a 'Batman game for windows 7'. This indicates an attempt to trick users into visiting a potentially harmful site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/aws?utm_term=batman+game++for+windows+7 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450044/normal_5ffcdeae3c5d5.pdfIn PDF document text
    • https://cdn.sqhk.co/boxokozofe/r4jbgeD/cute_drawing_ideas_easy.pdfIn PDF document text
    • https://menegelobeka.weebly.com/uploads/1/3/4/9/134903334/wegutitokuvikiji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366397/normal_60013557d3bd6.pdfIn PDF document text
    • https://wuvotawek.weebly.com/uploads/1/3/4/8/134872633/xulipig.pdfIn PDF document text
    • https://cdn.sqhk.co/setinapas/6higeyB/bullet_force_unblocked_games_66.pdfIn PDF document text
    • https://fobizolavavoka.weebly.com/uploads/1/3/1/4/131406440/4507453.pdfIn PDF document text
    • https://zasuzepomuban.weebly.com/uploads/1/3/4/6/134627511/4042159.pdfIn PDF document text
    • http://lianhua.life/sample_award_acceptance_speech_templatebwbko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413226/normal_5fc67e581ac99.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wutopow.epizy.com/bhumihar_name_wallpaper.pdfIn PDF document text
    • http://tesusaruva.epizy.com/lalovelixedavizovu.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/sinegimepavoditutav.pdfIn PDF document text
    • http://nupusadulawux.epizy.com/sample_ballot_for_barangay_election_2018_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/calculator_vault_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/impact_factor_journal_citation_reports_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/97155633922.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_off0000df86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF86 5416 bytes
SHA-256: 5e1423485ecaaa8c48db2838e4fb4937ee05966f337cc9a156fc966d0ef0cac9
font_01_sfnt_off0000f1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FA 10612 bytes
SHA-256: 9aaa639369fb4ee11615188dbc057889c96f4777245d73f03d11af878e60d829

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