Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b67df518473630d…

MALICIOUS

PDF

66.0 KB Created: 2020-12-18 00:13:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 6cd889e5a9a26bca11e2d5730b04360a SHA-1: 5cde86ee8baa676cc42c0b8fded81219e5534206 SHA-256: 0b67df518473630d32c2f8ea2c4190a2f9ee70be3606aac6e0b4d7fb1ff036c3
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 'trafffe.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text fragments that, combined with the URI, suggest a lure to a malicious website.

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://trafffe.ru/123?utm_term=bid+time+return+pdf PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/silicon_valley_episodes_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6836ee9fc3622d5489bf7/t/5fc888aa13de6e79815d28e6/1606977707429/best_free_offline_poker_app_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ccd49b9-d9fa-474e-b63f-fcf7dee1393c/learn_2_fly_unblocked_games.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/pulmonary_hypertension_guidelines_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a228f93-33a4-4d3c-905e-52e3cb822365/2.1.6_truss_system_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d3b00b6b03258f353712/t/5fc1d01b3c02f22b9d50266e/1606537246239/70683047328.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d881b18-8956-413a-a300-aeea1630483b/99901511513.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4319c366-9704-4ee1-9730-c5f90d99848d/nordictrack_treadmill_manual_mode.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe13c0f81c9a2a0c6a1d53/1606292417060/longhorn_expiration_date_codes_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5875b239b072291509c32/t/5fc91da0504e0f798630f8b8/1607015841359/10932076858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de93f629-9ea1-43b7-b9bf-6bb286f1d771/fivuxipazemota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23b39c2c-efb9-4e35-bb7f-abec157fded1/kowagafufa.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_off0000c6f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F3 4816 bytes
SHA-256: 0521fcf9129fe751974a51ec53438dc9a660902cea47b4aa667cc1195f4565d7
font_01_sfnt_off0000d73d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73D 10720 bytes
SHA-256: 429a29d1906b175ffa7feca53cb83fc2479cc044734ed4ee5b70da808f8c42fd

Open this report in the interactive analyzer, or submit your own file for analysis.