Malicious PDF — malware analysis report

Static analysis result for SHA-256 af88ac5ffed1f0ea…

MALICIOUS

PDF

82.0 KB Created: 2021-07-14 08:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 746288a5824925ea14b49956f5973f32 SHA-1: d294d6d4ff8533e5c115893f1eb391a3c7fe58e7 SHA-256: af88ac5ffed1f0eab5467733aff359f8eec71e80b55bd4d0e26be8e237407310
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'huntic.ru', which is likely part of a phishing or social engineering scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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://huntic.ru/square?utm_term=bee+gees+message+to+you+lyrics
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee16fb3753dc428c857cda/1626216187785/how_to_export_excel_into.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed850ac50d503b9d5903b8/1626178826992/instructor_solution_manual_for_foundations_of_astrophysics.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e870080c43fe23627f1730/1625845768357/wapakiwig.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ed9413c2ef2d11c8d870c3/1626182675187/how_to_validate_sign_in.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8cf5a546fd16393e402ad/1625870170910/vacation_email_outlook.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8463ec3e732754cec5ed3/1625835070603/17100433037.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7bf9c81471576eaeb8da0/1625800605096/great_tricep_exercises.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec94571996685841aa1ab1/1626117208306/what_does_the_phrase_indian_giver_mean.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8e581c0906550d9081ac6/1625875841797/loss_of_smell_homeopathic_medicine.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cae6.bin
b902e308eff15ae8848cad73e43279f3b34cc672be7a77a147ba30ff8d8102cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE6 10736 bytes
font_01_sfnt_off0000e3b1.bin
1de70a244522a5a959423fde2a71b51a208ff4fb3533040d50391bf94a08914d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B1 16392 bytes
font_02_sfnt_off00010e56.bin
27fa49ca30b1f57c6e4f8b99ad1f73ead7010ce1f191e20d716503af09158f46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E56 16160 bytes
font_03_sfnt_off000123cf.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123CF 16792 bytes

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