Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02327fa40c1e899…

MALICIOUS

PDF

59.0 KB Created: 2020-12-05 18:25:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7d808e3a04d3839b76cefdd720c3f56 SHA-1: 593bdd89b970864e950d642303e6d0e9fc143497 SHA-256: d02327fa40c1e899bfe5f1c2b9c5b3cda7a5d74637979dbae6de3fb52905a662
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 URI pointing to a suspicious domain, which is likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains text related to 'Brach's jelly beans nutrition', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffi.ru/123?utm_term=brach%2527s+jelly+beans+nutrition
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dinigugaxej/kokonuvixigasuwov.pdf
    • https://uploads.strikinglycdn.com/files/da299a08-7ebe-4b42-bd84-3323a9f2d969/75248244047.pdf
    • https://s3.amazonaws.com/fajonubinomeder/xemusemewevo.pdf
    • https://uploads.strikinglycdn.com/files/f26d1b55-f64d-4d3a-9209-2530e836f6c8/examples_of_localization_of_function_in_the_brain.pdf
    • https://s3.amazonaws.com/voxipanovigepiv/project_action_sheet_template.pdf
    • https://s3.amazonaws.com/garorowa/51358880628.pdf
    • https://s3.amazonaws.com/pogolo/pefatilosuf.pdf
    • https://s3.amazonaws.com/jiwotarotavuz/lomobisenujane.pdf
    • https://static1.squarespace.com/static/5fc110e9ff13940aa2409adf/t/5fc9485b3d7de937032ff6b9/1607026781145/motorcycle_shop_near_me.pdf
    • https://s3.amazonaws.com/remeranexe/angiosperms_vs_gymnosperms_worksheet.pdf
    • https://s3.amazonaws.com/tetazino/print_webpage_to_chrome_ipad.pdf
    • https://uploads.strikinglycdn.com/files/7c8fd7ee-1c60-475f-ba8f-0934c98396ea/tevisaduruvefurezagubi.pdf
    • https://s3.amazonaws.com/xeponodij/26412060200.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_off0000ab7b.bin
ca1d7ecbf9b43cd951f69cac3726ba35d8cfb46ca9f6b10d31cd003a4d20f310		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB7B 5288 bytes
font_01_sfnt_off0000bd83.bin
7b25188da8ea0e1be8ef0093763646b1693108ae937b6eb3840bd3d8f4cfe376		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD83 10024 bytes

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