Malicious PDF — malware analysis report

Static analysis result for SHA-256 376861b4ce161ef4…

MALICIOUS

PDF

78.7 KB Created: 2021-07-16 12:31:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9456c1fe77e961f30daddab4da4ba3d5 SHA-1: 059c10bf03341f1e9f44a747069e95c93baaebd9 SHA-256: 376861b4ce161ef43f98cec807d48e1e4a7f955d62ab8b101c6d1c35a83db4ee
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for phishing or malware delivery. No scripts were extracted, but the presence of the malicious URL and the overall detection profile strongly suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8571

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://krisoc.ru/square?utm_term=low+rise+meaning
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e86e64ea5c215caafc0e4a/1625845348671/guwisubanijawike.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60efcc653a4e3014a1c10326/1626328165648/ms_sql_group_by_count.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8b8f8d7702a4b9a6e64c7/1625864440712/geometry_topic_7_test_answer_key.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee733f02e0767984f6a916/1626239807685/icd_10_for_myofascial_pain.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed8e89dacdbe35d62bad1a/1626181257894/how_to_find_the_amplitude_and_period_of_a_function.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee5c37f72ce0266e11d526/1626233911393/jimmy_johns_menu_with_prices.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_off0000d3fa.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3FA 16792 bytes
font_01_sfnt_off0000ec0c.bin
17ddea01852e56124926f74ee10139925b0476eb65081d0880ecc65376f72ed8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0C 16756 bytes
font_02_sfnt_off000117bf.bin
08485ed1b431aa77899b3500cc6eb230665502f7fd7e5aae882742eec158877a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117BF 10348 bytes

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