Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d71140d95955ab…

MALICIOUS

PDF

85.9 KB Created: 2021-03-15 01:20:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67ac10ed0ccbc215658afc7538b7bb79 SHA-1: 7f964a82a6513ddee27215262e9d1a2574cfeb9a SHA-256: c2d71140d95955abe9020d5c0731329ffe7ddba1075dec3b21da75fa761ec43e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a domain that appears to be part of a phishing or malware distribution scheme, attempting to trick users into downloading further malicious content under the guise of a legitimate search result. The document body, though heavily obfuscated, contains keywords related to the URL, reinforcing the lure.

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/wix?keyword=backyard+ballistics+pdf+download
    • http://gunofixe.medianewsonline.com/how_fast_does_a_coolster_150cc_atv_go.pdf
    • https://static.s123-cdn-static.com/uploads/4417662/normal_5fcaee6edd26b.pdf
    • http://wusokamojifel.scienceontheweb.net/90449814824.pdf
    • https://cdn-cms.f-static.net/uploads/4369905/normal_60168c452667a.pdf
    • https://cdn-cms.f-static.net/uploads/4450634/normal_6015332cc9057.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sogoxutagejuno.atwebpages.com/bayam_duri.pdf
    • https://s3.amazonaws.com/sizadagazagaj/do_usps_priority_mail_deliver_on_sunday.pdf
    • https://uploads.strikinglycdn.com/files/3eda4b6e-0ce0-445b-9a1f-0f4d8389d16b/arturia_beatstep_pro_black.pdf
    • https://s3.amazonaws.com/sisaxu/gapuxekadil.pdf
    • https://s3.amazonaws.com/rilexazejuzovep/84331554701.pdf
    • https://s3.amazonaws.com/vukusa/best_file_recovery_software_for_android_phone.pdf
    • https://s3.amazonaws.com/fifuto/mabatixe.pdf
    • https://s3.amazonaws.com/dibedamoka/sabexepogideke.pdf
    • https://s3.amazonaws.com/lekelepowo/29207207293.pdf
    • https://s3.amazonaws.com/latufenaw/xekesidopifugoxidivu.pdf
    • https://s3.amazonaws.com/satedafadusizo/nodegirodoxinupaxenoz.pdf
    • https://s3.amazonaws.com/midaguvimabof/boston_gear_cad_drawings.pdf
    • https://s3.amazonaws.com/mukutud/compound_complex_sentences_worksheet_answer_key.pdf
    • https://uploads.strikinglycdn.com/files/3c89cff9-d11e-49d9-9a5d-26bc900ca574/went_down_the_rabbit_hole_meaning.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_off0001101d.bin
6dc5befb78700524ee16e407a577fd2315217cedb35127db22b448390c014158
pdf-font-stream PDF embedded font (sfnt) at offset 0x1101D 5596 bytes
font_01_sfnt_off0001234a.bin
103f3ad0c5993504d6c78028b3cceb5923994a8856ab9e6066cd49149bff8a34
pdf-font-stream PDF embedded font (sfnt) at offset 0x1234A 11264 bytes