Malicious PDF — malware analysis report

Static analysis result for SHA-256 801729b99c96bcb2…

MALICIOUS

PDF

82.5 KB Created: 2021-07-14 06:46:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9be13a11e1ce524eeaf2c6a8e3a3867a SHA-1: 08f94ba921f7396c146708dd27a09ad12cbf99ec SHA-256: 801729b99c96bcb20649cfc548f3163ec9978d178d033e4a01d039cb880a7e29
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains multiple embedded URLs pointing to external websites, suggesting a phishing or credential harvesting attempt. The PDF_URI heuristic also identified an external URI, further supporting the malicious intent of redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://feedproxy.google.com/~r/razvivatel/yapz/~3/XMoLd4EPXkg/square?utm_term=osrs+devious+minds
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ece08f937216722043c870/1626136719432/96935920650.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e84f7c05752f323cf0d5e3/1625837437009/pemogamonulutewefew.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e93e7cb68d8f0f4bf938a6/1625898620726/your_dns_server_might_be_unavailable_windows_10_fix.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec97979cb57f380a79644d/1626118039644/mosasebazetikazewemegu.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8ff7ec0906550d909d841/1625882494203/sitigajoxufirijefagilobuj.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ede457ebcbe27d0c7e81d9/1626203223209/microbodies_of_cell.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee5089b1f8b9564886ff42/1626230921381/prosiphon_elite_review.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e90be52210ba6bce115188/1625885669367/hardware_components_of_computer.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e83c098fb0dc0613f0cd21/1625832457675/garupopofidukesen.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e86d13217a5734854a16d1/1625845011173/35685237547.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec85d3c268f363b086fd6e/1626113491414/baxiporajakofapus.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e80a47d93aeb546a166bac/1625819719732/crossing_over_in_prophase_1_of_meiosis.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7c9ee81ab8d1aa9de571e/1625803247052/visual_basic_is_an_event_driven_programming_language.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_off0000e055.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE055 16792 bytes
font_01_sfnt_off0000f867.bin
19ff96230d0f1e67267d4aebb41b56a46523567597ecb85de8c98eac6932c7d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF867 17876 bytes
font_02_sfnt_off000126a5.bin
eceaf942d18ad9b7e8fc1d654e34674f8244f35c946b7eb85aff6ef24ca26edc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126A5 10292 bytes

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