Malicious PDF — malware analysis report

Static analysis result for SHA-256 da29b6c856f6b102…

MALICIOUS

PDF

78.5 KB Created: 2021-04-04 00:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 94292f9d9940f53d6e8b2310f8c9641e SHA-1: 11506ab52a2a161eaeeb0eb99a967b180c40c471 SHA-256: da29b6c856f6b102cabf58d31bdcd151cefbcf1948e1787852ce708c3a8a2810
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature, with ClamAV identifying it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'management of hiatus hernia'.

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://dugedepap.ru/award?keyword=management+of+hiatus+hernia+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4403276/normal_5fe23ba23b1ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451205/normal_6050fd1758acc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421788/normal_600318568ea0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4531523/normal_5fe864e235f51.pdfIn PDF document text
    • http://grigolia-studio.ru/9879666bybq4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377101/normal_6036dbdb9a69e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467306/normal_6006caef23f7b.pdfIn PDF document text
    • http://manthoughtswebsite.website/does_ikea_do_king_beds2h7nr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403823/normal_60139003d1f9f.pdfIn PDF document text
    • http://suwufexez.sportsontheweb.net/bikini_body_guide_nutrition_free.pdfIn PDF document text
    • http://woziwowariv.sportsontheweb.net/xamudos.pdfIn PDF document text
    • http://xikapajami.mypressonline.com/samemekokaka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378846/normal_5ffd542a8d7bf.pdfIn PDF document text
    • http://ygrash.website/nourishing_traditions_chicken_bone_broth2qox4.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/perfume_the_story_of_a_murderer_full_movie_download_in_hindi_480p.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://dafukip.myartsonline.com/blatchford_escala.pdfIn PDF document text
    • http://domuromu.atwebpages.com/49517847957.pdfIn PDF document text
    • http://nuzikenevizut.onlinewebshop.net/74498872141.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A4 5312 bytes
SHA-256: 78cab044f7941ba25029bae879d7d4ccbf443c25426c7fc7e39e4d2cbabc56fe
font_01_sfnt_off0000fa89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA89 10612 bytes
SHA-256: 7af827354ba08640637cd7ffd4b34fd7e38e14c88288eee4427e56727000dfd9
font_02_sfnt_off00011ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA8 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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