Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d54ec50e3c798e8…

MALICIOUS

PDF

78.2 KB Created: 2021-03-06 08:06:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5073d5adc79335bb6b865163bbd83f3f SHA-1: 73614fd340e7d092c03f1d361c26942960e810b0 SHA-256: 2d54ec50e3c798e8fb114f45e57aa002359f044d650f01e2f9d0b26712298347
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting it is used for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a common phishing lure designed to redirect users to malicious content.

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://jumiwimov.ru/strik?utm_term=how+does+tax+revenue+affect+gdp
    • https://cdn.sqhk.co/gobopovupav/vrhgvhi/wutojemo.pdf
    • https://static.s123-cdn-static.com/uploads/4383916/normal_5fc9778d4169e.pdf
    • https://febumade.weebly.com/uploads/1/3/4/7/134757335/wepasudowadilo.pdf
    • https://cdn.sqhk.co/xuxumududu/Qyjmihb/youtube_diy_surgical_mask_pattern.pdf
    • https://static.s123-cdn-static.com/uploads/4426688/normal_6007564cb4639.pdf
    • https://cdn-cms.f-static.net/uploads/4422382/normal_60297f089dcf5.pdf
    • https://cdn.sqhk.co/kagalitisup/hachihb/58506482585.pdf
    • https://gotenalonas.weebly.com/uploads/1/3/4/3/134372716/cd7dc69404.pdf
    • https://cdn-cms.f-static.net/uploads/4366009/normal_60239edb65e01.pdf
    • https://ruzikafa.weebly.com/uploads/1/3/0/7/130739156/4006035.pdf
    • http://vedakedudeloko.22web.org/lagoxevolaxofiwuza.pdf
    • https://cdn.sqhk.co/zenekukera/hcMgdmp/digitech_jamman_looper_phrase_sampler.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pokezuturev.rf.gd/does_network_layer_in_tcp_ip_and_osi_model_are_same.pdf
    • http://gefifeji.rf.gd/zadie_jumpsuit_pattern.pdf
    • https://uploads.strikinglycdn.com/files/fe9d60a7-b83e-476e-808d-104b1f35fc01/towukix.pdf
    • https://uploads.strikinglycdn.com/files/b964d791-7f17-4048-988c-102ea9ce9719/rowenta_steam_care_iron_dw3191.pdf
    • http://xokopaxitake.rf.gd/45596806737.pdf
    • https://s3.amazonaws.com/gezetega/nogirigobedemimakuwu.pdf
    • https://s3.amazonaws.com/fujadabez/c_s_lewis_the_four_loves.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_off0000f388.bin
bfd250a2e6f96167059ec14e79a0502db6720fe42d2eace60c9790ed74772192
pdf-font-stream PDF embedded font (sfnt) at offset 0xF388 5472 bytes
font_01_sfnt_off00010657.bin
08eecab663f401ed6a11af76481b3333484400cb4508d6bb2fbbf21c0af1c321
pdf-font-stream PDF embedded font (sfnt) at offset 0x10657 11000 bytes