Malicious PDF — malware analysis report

Static analysis result for SHA-256 f53e73f74979f60e…

MALICIOUS

PDF

70.8 KB Created: 2021-02-14 23:38:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: ee1b8ee59d7f6339152cce71ea121cc3 SHA-1: 7cbeb5c92f14454f22b6280af405a4801d517bcc SHA-256: f53e73f74979f60e1ce27fbe4a489373dd8372d9f02b711140961daa9025cc60
156 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document's content attempts to trick the user into revealing sensitive recovery information. While no explicit scripts were extracted, the presence of embedded URLs suggests a phishing attempt to redirect users to malicious sites for credential harvesting or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://baarspo.ru/aws?utm_term=bitvise+ssh+client%2528+tunnelier%2529 PDF link annotation
    • http://avtoshkola-region26.ru/96776948171vz6pa.pdfIn PDF document text
    • http://effektzhizni.ru/629100436371g7s2.pdfIn PDF document text
    • http://webmastervlad.ru/18395115940js3oz.pdfIn PDF document text
    • https://xuzizalebu.weebly.com/uploads/1/3/4/7/134772475/00012.pdfIn PDF document text
    • http://fsfsfd.xyz/definicion_de_calor_cedido_y_absorbido_por_los_cuerposvbi2f.pdfIn PDF document text
    • http://cabinetsapp.xyz/hallucinations_oliver_sacks_freen3jtl.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/23607042251pzeil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457302/normal_6001397ad3bee.pdfIn PDF document text
    • http://ro-shop.space/legion_leatherworking_guide_1-_800o7m9m.pdfIn PDF document text
    • http://totalcreditreport.info/canopus_advc-_110_manualr93bz.pdfIn PDF document text
    • http://3gusevshop.website/budukofidorojifadakujogu4xqoq.pdfIn PDF document text
    • https://kamowosig.weebly.com/uploads/1/3/1/0/131069991/0aacac01a0.pdfIn PDF document text
    • https://vomediwanuxorat.weebly.com/uploads/1/3/4/3/134327005/d7aa7bb57c.pdfIn PDF document text
    • http://legionmone.xyz/lovesodawidipimiw31v40.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/86512457544.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/wedding_march_felix_mendelssohn_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/bangalore_days_songs_free_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/keluxilokalixoborunox.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_off0000d7ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AD 4940 bytes
SHA-256: c2ca0be1385402cb86f547d95766312bdb3377ddafbb7a9a2d69e85ba59ea078
font_01_sfnt_off0000e88b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88B 11240 bytes
SHA-256: b71e4520ab117a610fdceb350f4acf19be4210acc57845c5af51f163c30f08a0

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