Malicious PDF — malware analysis report

Static analysis result for SHA-256 f01cb4f93a6bad77…

MALICIOUS

PDF

137.3 KB Created: 2021-04-28 05:35:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6040a4c39eaed980734a81127543e6ec SHA-1: d1701fc5ffcf1430570335d5506c60cbc20267c1 SHA-256: f01cb4f93a6bad770d6b2b3b985c2fa59e6eac09ec35005f41b7590c17886d10
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a secondary payload or phishing content. The document body appears to be obfuscated or corrupted, but the presence of the external URI is a strong indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://xezojetit.ru/strik?utm_term=quotes+elbert+hubbard
    • https://ximapufem.weebly.com/uploads/1/3/1/4/131437784/samogomarobur-sakigurugepe-pedanuropuziwo-ninanamutakos.pdf
    • https://cdn-cms.f-static.net/uploads/4402949/normal_5fe62239c2017.pdf
    • https://cdn-cms.f-static.net/uploads/4421335/normal_6039140652cbb.pdf
    • https://dajexave.weebly.com/uploads/1/3/4/3/134352807/7243c649139551b.pdf
    • https://cdn-cms.f-static.net/uploads/4462036/normal_606ce59b518a5.pdf
    • http://ig-objectionform.com/kids_birthday_party_ideas_near_megmg7b.pdf
    • https://lazumuron.weebly.com/uploads/1/3/4/8/134863931/3acf3281.pdf
    • http://espaceabonnes.com/49207176913q07i3.pdf
    • https://static.s123-cdn-static.com/uploads/4480897/normal_5fde902bb3f8d.pdf
    • https://cdn-cms.f-static.net/uploads/4477878/normal_60323e28135cd.pdf
    • https://xijafidul.weebly.com/uploads/1/3/2/3/132303061/1896139.pdf
    • http://gojoges.iblogger.org/candy_crush_jelly_saga_apk_old_version.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pexodugosa/formation_charpentier_menuisier_sherbrooke.pdf
    • http://tiluxusimutine.atwebpages.com/bidilotuduvapu.pdf
    • https://s3.amazonaws.com/sajatofubote/audio_video_joiner_for_pc.pdf
    • http://jerasopel.epizy.com/audit_report_of_listed_company_2018.pdf
    • http://bopisumeku.atwebpages.com/subject_and_predicate_worksheet_for_grade_4_with_answers.pdf
    • http://vanuzavabew.epizy.com/38140134116.pdf
    • http://varirojemixu.myartsonline.com/47087527413.pdf
    • https://s3.amazonaws.com/wofaxil/asuran_tamil_movie_movierulz.pdf
    • http://zizakipu.epizy.com/57810276961.pdf
    • http://sepusuvom.epizy.com/ielts_exam_samples.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_off0001cf2f.bin
716024cdc97bbfbf7eee86739859218e6aa23d233d55e03622ec114ca5be34f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x1CF2F 5112 bytes
font_01_sfnt_off0001e07c.bin
b8927886849fa796a0b3cd332eaccf872f124a89f7f1393bdb083a559e58f84d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1E07C 17756 bytes