Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c9f38c29117ec91…

MALICIOUS

PDF

80.2 KB Created: 2021-01-19 14:03:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: a0db563a8322e0b75c8b9bb7011ab122 SHA-1: d6112e763e9f2824ce00105b0769c0c293326f3b SHA-256: 1c9f38c29117ec917a044398db9f8401afd37ec8ddf9ac2958da5adc09b35289
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains an embedded URL pointing to 'traffset.ru', which is likely a malicious domain used for phishing or distributing further malware. The document body, though heavily obfuscated, suggests a lure related to legal matters ('Writ of possession'). The presence of embedded URLs and the nature of the detection indicate a phishing attempt designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffset.ru/123?utm_term=writ+of+possession+nc PDF link annotation
    • https://nexirexosevexos.weebly.com/uploads/1/3/4/5/134500935/pukowamiradi-novagenudazivi.pdfIn PDF document text
    • https://site-1175728.mozfiles.com/files/1175728/48974948808.pdfIn PDF document text
    • https://cdn.sqhk.co/gofelaxes/e8xhgdJ/ivar_viking_haircut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416326/normal_5f98d3119578e.pdfIn PDF document text
    • https://bazubipevudupu.weebly.com/uploads/1/3/4/8/134876407/sanefab_talogawopafo_fatiro_zijewedaril.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387920/normal_5f973ac0dd9e5.pdfIn PDF document text
    • https://piguvedulo.weebly.com/uploads/1/3/4/7/134724556/lomoze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374708/normal_5fbc72c744be9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480148/normal_5ffc94a318c8a.pdfIn PDF document text
    • https://gajifawegux.weebly.com/uploads/1/3/4/6/134649352/lataxamabim.pdfIn PDF document text
    • https://golotewojedonam.weebly.com/uploads/1/3/4/7/134767862/5161646.pdfIn PDF document text
    • https://cdn.sqhk.co/feletitami/gMvhaig/dulawerivuginaw.pdfIn PDF document text
    • https://site-1167971.mozfiles.com/files/1167971/araba_oyunu_indir_apk_day.pdfIn PDF document text
    • https://site-1168281.mozfiles.com/files/1168281/amapiano_drum_kit_for_fl_studio_mobile.pdfIn PDF document text
    • https://pibezenasa.weebly.com/uploads/1/3/1/4/131454503/8327698.pdfIn PDF document text
    • https://fafetomipisiso.weebly.com/uploads/1/3/4/6/134603542/dowuxuluzum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369776/normal_5f946b132988a.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
    • https://s3.amazonaws.com/panokojol/85359879411.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/les_berceaux_gabriel_faure_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/61778237717.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/74318155639.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/mysql_community_server_for_mac.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_off0000efdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDD 4568 bytes
SHA-256: 083145273b3311dbbd054d5674b6764317fe45fe21a77780c962b690874f8ab2
font_01_sfnt_off0000ff7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7B 10952 bytes
SHA-256: 1706ba38eba342041fb0611f17d9665f2f6707f8f3824652207642c7d8f8ce17
font_02_sfnt_off000124f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124F6 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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