Malicious PDF — malware analysis report

Static analysis result for SHA-256 d88cf2dd70424390…

MALICIOUS

PDF

74.7 KB Created: 2021-04-04 16:19:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07270e96be159f258713e2001752aba3 SHA-1: 2501fa49b1baf9f94f811ae6d15afe702542f0e2 SHA-256: d88cf2dd7042439057d277948f24473d9e1bf6bfcd6e68f65a0072ca05851196
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 directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to reviews and potentially deceptive content, aligning with a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/wix?keyword=kenya+crooks+reviews
    • https://cdn.sqhk.co/kiraxozi/mjbjagi/spinach_nutrition_info.pdf
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdf
    • https://cdn.sqhk.co/ruwonumatag/4caHUjO/city_fight_san_andreas_mod_apk.pdf
    • http://jagodadexujuza.iblogger.org/wemotegafuropeporulule.pdf
    • http://zdsshop.top/interior_design_software_free_trial1494k.pdf
    • http://byt-upak.ru/68708630025jbieo.pdf
    • https://cdn.sqhk.co/bobofibu/hbia7Pa/university_of_chicago_open_house_schedule.pdf
    • http://mosdendy.store/zurivizupusogepilapid9sq9m.pdf
    • https://cdn.sqhk.co/fifenije/arFheib/mastermind_casting_crane.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tobovunoberiki/88503393209.pdf
    • https://s3.amazonaws.com/xisakazelelinim/kabetekuda.pdf
    • https://s3.amazonaws.com/podawakumepewez/29692138208.pdf
    • https://s3.amazonaws.com/sojebelevenex/68350232086.pdf
    • http://dixasobif.epizy.com/fajukuvijevateseje.pdf
    • https://s3.amazonaws.com/rurovikejigibu/pixamowulopuj.pdf
    • https://s3.amazonaws.com/jivuxo/59213106401.pdf
    • http://muravurut.epizy.com/how_to_look_at_powerpoint_notes_while_presenting_on_zoom.pdf
    • https://s3.amazonaws.com/rekorewexidiwo/nufapitivugema.pdf
    • https://s3.amazonaws.com/wovitiku/20094152334.pdf
    • https://s3.amazonaws.com/rorives/caregiver_affidavit_form_california.pdf
    • https://s3.amazonaws.com/votuweroxigezog/vivuw.pdf
    • https://s3.amazonaws.com/vabedafozo/60221037722.pdf
    • https://s3.amazonaws.com/palikuvexake/improve_your_social_skills.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000def7.bin
bf393d5c17679c2c3fdc5f7b113b5319988c537df5b839ec9d55cb0ddea2a882
pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF7 5048 bytes
font_01_sfnt_off0000f049.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0xF049 1800 bytes
font_02_sfnt_off0000f8d7.bin
bfd1e567e7bc75f2e69b781233a66d16d498909322f847627b130e056950bd44
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D7 10524 bytes