Malicious PDF — malware analysis report

Static analysis result for SHA-256 f52476c875aba019…

MALICIOUS

PDF

81.7 KB Created: 2021-01-17 11:28:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 69c49af662fcd5161ade2f7e38c63fef SHA-1: bb6842f2c704c1782021e01253241999de247788 SHA-256: f52476c875aba019b90639bbcc1bff28388c10bcefc7279af5707f7c9793a1c5
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'https://traffset.ru/123?utm_term=geography+club+movie+watch+online+free', which is suspicious. The document body, though heavily obfuscated, suggests a lure related to online content, aligning with phishing or malware distribution tactics. No scripts were extracted, but the presence of an external URI is a primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/123?utm_term=geography+club+movie+watch+online+free PDF link annotation
    • https://cdn.sqhk.co/fenogate/egeidic/my_cafe_games_apps.pdfIn PDF document text
    • https://site-1177969.mozfiles.com/files/1177969/android_car_apps_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/kinanekoxo/ZGxxjgt/jinofivamegomodugem.pdfIn PDF document text
    • https://cdn.sqhk.co/refevebux/iigchcf/the_walking_dead_game_2019_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/sawitofi/Zibkjic/sejepipomurirago.pdfIn PDF document text
    • https://cdn.sqhk.co/tuseliwi/hhygeUj/xazawegomeduwedeko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369308/normal_5fb0270738840.pdfIn PDF document text
    • https://cdn.sqhk.co/lekuruzomef/dhf5eQW/55964072059.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dazawojob/fortnite_save_the_world_v_bucks_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/47559893169.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/9.3_fermentation_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/biotransformation_of_drugs_slideshare.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/3663907924.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10112 5676 bytes
SHA-256: 2fb70e18c344d3037dcc96d421cc8d1699b5231e1ba32d55be89ad532b5032d9
font_01_sfnt_off00011458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11458 11136 bytes
SHA-256: bd3d426144b1f930edfa8b34fa3a5c6ccd2b46a9807491cb65a28cb906820a5e