Malicious PDF — malware analysis report

Static analysis result for SHA-256 a715c9c995ba2428…

MALICIOUS

PDF

77.7 KB Created: 2021-04-11 10:28:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: a2127344d5baf0504f0bfb32c48c8ae5 SHA-1: 788a3777a049e5ccdb0241874f13db4ddab358ab SHA-256: a715c9c995ba2428cf09d52b349501e64a1b24915535febf0751f3e3cc658ee0
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to LG device charging issues, directing users to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit user curiosity and lead them to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://vilenefex.ru/strik?utm_term=why+isn%2527t+my+lg+charging PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380854/normal_5fe0426056adb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451575/normal_60461d90978e2.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwifemi/hhegcBY/nagimuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418565/normal_5ffb587c65603.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/spinal_anesthesia_drugs.pdfIn PDF document text
    • https://gilitizek.weebly.com/uploads/1/3/4/1/134131368/28eadc0151.pdfIn PDF document text
    • http://dithetsen.xyz/conceptual_physics_the_high_schoolnqbap.pdfIn PDF document text
    • https://cdn.sqhk.co/mibemofega/OgfoLid/delete_game_center_ios_14.pdfIn PDF document text
    • https://zibinileder.weebly.com/uploads/1/3/4/7/134748255/ziwuloxisalosuvuzogo.pdfIn PDF document text
    • https://lufuroxula.weebly.com/uploads/1/3/1/4/131408913/jotajugot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469351/normal_5fe40a0d686eb.pdfIn PDF document text
    • http://streichpack.online/54199382468wsop7.pdfIn PDF document text
    • http://xomutukegadoj.mypressonline.com/ariston_velis_evo_100_manual.pdfIn PDF document text
    • http://ontrade.top/death_note_1st_opening_lyrics0v5pd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388407/normal_601d921d85f8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460975/normal_601c5bfb4609e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474223/normal_5fc888fa046c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417214/normal_5ff220282860c.pdfIn PDF document text
    • https://posodukur.weebly.com/uploads/1/3/4/3/134347560/wimopidujumapas-kumujuri-rikepeputemuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497370/normal_5fd284562bbb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458833/normal_605977e2101a2.pdfIn PDF document text
    • https://napuximijagebi.weebly.com/uploads/1/3/4/7/134766840/mawado-zusap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://molagegivijoxu.onlinewebshop.net/bosilewikoxowenirekexuseb.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/wizards_of_the_coast_pokemon_booster_pack.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_off0000f35a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35A 5364 bytes
SHA-256: d17a6e55a7667c7ad91b323bcdfe3a04e222d0e7f4c3e37b4ff8b19af604e8c0
font_01_sfnt_off00010587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10587 10568 bytes
SHA-256: 40dd265f6dae2916091ce9578c102ef68b6f8138ea28c2a53b434dc708aca5c8

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