Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8ed1646776cca8b…

MALICIOUS

PDF

82.2 KB Created: 2021-07-13 17:20:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 367acd977972bc7dc8b71f4a24119670 SHA-1: 17dc8fbdbac9fee0107b2f38d7bf6f15d01ccb8f SHA-256: e8ed1646776cca8b2adc27c884b791e5075302c1d45e14a31b647264ce02ea89
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'ketchas.ru', which is likely a phishing or malware distribution site. The authoring application 'wkhtmltopdf' suggests the PDF may have been generated programmatically to obscure its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8896

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://ketchas.ru/square?utm_term=the+slope+of+speed+time+graph+gives
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e94f1de6a58043b69304d3/1625902878106/92210904937.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e76f879d016f55d43e920e/1625780103816/cheat_call_of_duty_mobile_apk.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ecb54acc49a53ffc764e4d/1626125643027/zixasatifawol.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8d4b5c81c3e1fd72a0cc5/1625871541184/visazixojepifobinimezage.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e94959c91b61347ea4da65/1625901401234/exodus_17_and_numbers_20.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8138bdbc52028c841bd6b/1625822091586/kawurugamatozonopunikav.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e85894e98ab22bd7d52694/1625839764988/11628130170.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfd9.bin
fbed59616a15534b9c10515ae0e16c65ef957d95777caffedd88a77bdbccb83c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD9 16752 bytes
font_01_sfnt_off00010b9a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B9A 16792 bytes
font_02_sfnt_off000123b1.bin
512b7535c13aa37f7ab261c8f63e5a8295152541afb978af14173a7030fb2abc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123B1 10872 bytes

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