Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7e9bfe8fbb002fa…

MALICIOUS

PDF

82.6 KB Created: 2021-07-12 23:18:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eb991ed11996d08c9e56532f075b6adc SHA-1: b933a9ead4d8f0c369472f989cd646e98a2b4492 SHA-256: f7e9bfe8fbb002fadc7e7dccd4fa95fffe3b5dfd737dce9a9fedbe9331305682
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to 'irlanc.ru', which is likely used to host malicious content or phishing pages. No scripts were extracted, but the presence of external URIs and the detection signatures suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8855

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://irlanc.ru/square?utm_term=how+many+ml+is+half+a+tsp
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8e83d2210ba6bce0f546e/1625876542131/jufuzizisasikaw.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8706a3249a6038709a8e4/1625845866251/alessia_cara_wild_things_mp3_song_free_download.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec78b5668ba31612b4ea62/1626110133062/duality_in_a_sentence.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec9a9b831aaf5e928c5166/1626118813232/93411666084.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec85c7c217102653d6781b/1626113479438/61601877174.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e9118a025aa46e30d22829/1625887114523/sosix.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e920c4320dbd0de280fa02/1625891012289/drinking_games_with_a_deck_of_cards.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7f4a06d117d6eeca547f6/1625814176957/firagibedesibet.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_off0000c947.bin
7bc458d921fb7742fed7bfcfc40c6810b6792458b767915fb05fe3e71e88b3a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC947 10584 bytes
font_01_sfnt_off0000e13d.bin
54e42248f333c53c830b1f4f45dbb0e6d5859c8c6e18d07e3a0873a572253561		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE13D 17680 bytes
font_02_sfnt_off00010f01.bin
00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F01 16140 bytes
font_03_sfnt_off0001247d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1247D 16792 bytes

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