Malicious PDF — malware analysis report

Static analysis result for SHA-256 6877201a1de1d7cf…

MALICIOUS

PDF

82.6 KB Created: 2021-03-14 09:10:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca5528149489669427a174d932f576b8 SHA-1: da2986a57832252218d35453fb450e0e2ca56a73 SHA-256: 6877201a1de1d7cf8a28bdca171268754fb17ec335dfec10e8f2683a6263238e
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 trojan. It contains an embedded URL that impersonates a guide for 'flipping houses', a common lure for phishing attacks. The presence of external URIs suggests the document is designed to redirect the user to a malicious site, likely to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/wix?keyword=flipping+houses+for+dummies+3rd+edition+pdf
    • http://zogometemo.sportsontheweb.net/anatomy_and_physiology_of_human_respiratory_system.pdf
    • http://beamorem.com/mary_poppins_returns_trailer_dublado3vkd0.pdf
    • http://perevod-card2card24.site/canon_speedlite_600ex-rt_iiisube.pdf
    • https://cdn-cms.f-static.net/uploads/4493227/normal_5fd84c981ff43.pdf
    • https://static.s123-cdn-static.com/uploads/4485821/normal_5fcaf985885c3.pdf
    • http://wapividazofar.scienceontheweb.net/zovefi.pdf
    • http://vladmer.ru/tururakemngpx.pdf
    • http://xofebuledat.scienceontheweb.net/85215334541.pdf
    • https://cdn-cms.f-static.net/uploads/4454290/normal_6014a46837ea7.pdf
    • http://lipexifinidoda.scienceontheweb.net/96548076663.pdf
    • http://help-feedback-amzn6.xyz/poxuruperuwa61w43.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lekezaru/lefunixoponorelanalo.pdf
    • https://s3.amazonaws.com/sepawi/84737553868.pdf
    • http://vobozezojip.onlinewebshop.net/organic_nomenclature_practice_problems_with_answers.pdf
    • http://japixunatavaxi.rf.gd/xedaduvanujibas.pdf
    • https://s3.amazonaws.com/zafaronivaj/railway_admit_card_kaise_kare.pdf
    • https://s3.amazonaws.com/tutapaxi/14907348928.pdf
    • http://woxepakaj.epizy.com/durga_puja_dhaker_bajna_ringtone.pdf
    • https://s3.amazonaws.com/firudegix/92967226328.pdf
    • http://resisimokopi.epizy.com/21844262699.pdf
    • https://s3.amazonaws.com/nazekisigiduz/how_to_make_a_breakfast_nook_bench.pdf
    • http://xigakixu.epizy.com/41815363201.pdf
    • https://s3.amazonaws.com/dosalapasenow/avast_gratis_para_celulares_android.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104ba.bin
d6a589b065095ae2867b80fd9d03a22580b2c0c9bad64531143811409ac85851
pdf-font-stream PDF embedded font (sfnt) at offset 0x104BA 5364 bytes
font_01_sfnt_off000116db.bin
b6af345602d6160e420a40932c8ace342ae2907e2720cfba97863dc7dd0d2de3
pdf-font-stream PDF embedded font (sfnt) at offset 0x116DB 11596 bytes