Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d71433fddbcbf7c…

MALICIOUS

PDF

75.8 KB Created: 2021-03-22 06:40:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9bc94c2f3277f133f9752ae00d8af7b SHA-1: b5ec50b6b1c953ddaced6b5d70e59f18f901c9e1 SHA-256: 5d71433fddbcbf7ccb55b1ff8e4fb950429fb08e04ed7a22f957bba133426627
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a domain associated with medication, suggesting a phishing or credential harvesting lure. The presence of PDF-specific heuristics further supports its role as a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/award?keyword=bromazepam+6+mg+bula+pdf
    • https://cdn.sqhk.co/xemugugafot/AXhcq4G/praise_and_worship_music_radio.pdf
    • https://cdn.sqhk.co/xobanozizesa/gfshBjh/sikuruvimifoveviligotan.pdf
    • https://cdn.sqhk.co/juzurupivepo/jrTrid1/63866582738.pdf
    • http://reduslimitalia-official.site/falaxojanakurekesugimedif8jm6i.pdf
    • http://momentikshop.space/disney_premier_access8nl99.pdf
    • http://shopsupergood.site/47195833768nq7fo.pdf
    • http://lozhobelir.space/how_does_think_pair_share_work3ra3x.pdf
    • https://cdn.sqhk.co/pulizojiwim/cq2oXFO/codm_global_top_up.pdf
    • http://vulenawaxoki.iblogger.org/rutafuvifozuxogoxe.pdf
    • https://cdn.sqhk.co/zogowefu/hujf1e0/basketball_buzzer_sound_effect_mp3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/putelekireza/43429662735.pdf
    • http://kezaforow.epizy.com/masofane.pdf
    • http://jusumexavajuzin.epizy.com/33276919218.pdf
    • https://s3.amazonaws.com/defipedibe/tableau_action_missing_fields_on_multiple_worksheets.pdf
    • https://s3.amazonaws.com/voxulija/83368087647.pdf
    • https://s3.amazonaws.com/lusabifef/26839962957.pdf
    • https://s3.amazonaws.com/desekusoxi/69956762441.pdf
    • https://uploads.strikinglycdn.com/files/1968cfde-fbad-4cac-a04d-429a4475c0c3/explain_anselms_ontological_argument_for_the_existence_of_god.pdf
    • http://fakipewoze.rf.gd/vusudifigu.pdf
    • https://uploads.strikinglycdn.com/files/44cf9b24-4aba-41f4-bfcc-d2e34c2f22b4/vitubol.pdf
    • https://s3.amazonaws.com/wovedukevikov/android_emulator_for_ubuntu_2018.pdf
    • https://s3.amazonaws.com/kujesulad/xixizoj.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_off0000e821.bin
7f81ea13b7e93a7c50231c0586eae7631349a2f07a9c3fe3ddd778c5847cb130
pdf-font-stream PDF embedded font (sfnt) at offset 0xE821 5576 bytes
font_01_sfnt_off0000fb0b.bin
91af98799098d47095b2be5c9c726608e1c711459141bd4ed6044f76b0deb5eb
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0B 12388 bytes