Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e7b02f17bc69776…

MALICIOUS

PDF

76.7 KB Created: 2021-07-15 14:54:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c17a03fc792db0629bc1d470a9ca2114 SHA-1: 36252fccc2896fbc3c33fdb407f91ab3d2483470 SHA-256: 2e7b02f17bc69776f12db7bdb9e388c7ab615da409ea232bf266a55bc09070a1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier returned a high probability of maliciousness. The PDF contains embedded URLs, one of which is associated with a phishing lure. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest it may attempt to redirect the user to a malicious site or download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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/sq/ugae/~3/eaN1Eb74jJI/square?utm_term=is+neptune+the+coldest+planet+in+the+solar+system
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60efe0ef3015c64070c88501/1626333424015/the_preserve_at_brier_creek.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e93bb519a9f87deb73ac15/1625897909995/84727879423.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f01edcb3de5a36b1281faa/1626349276954/potar.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec868b950202184f10ee16/1626113676094/pebimiwu.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e936eb0cbdad4d350682cf/1625896683115/devoted_to_me.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec8ced11a746407a41f550/1626115309790/how_to_get_faster_at_running.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60effe1cfd683a7867ca2016/1626340892255/duzogugasakijinimifo.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8dffe19a9f87deb6f5acd/1625874430666/uti_and_incontinence.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edda2836d5170423600918/1626200616364/use_of_laterite_soil.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f021551e1165054c954419/1626349909658/how_to_play_jurassic_world_evolution.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec918cdef1ca41d5fa42e6/1626116493042/cnc_milling_stainless_steel.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ed14dafb5306426ecae8c1/1626150106571/28800607512.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_off0000c969.bin
af2682f245ccc02d517740ff39ebb86987b4ad1bf33a21ccd6d52feb213fc5ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC969 16080 bytes
font_01_sfnt_off0000f2e0.bin
b1b4a14ab2d09cc8752dc9d7e1649b4c66df0437736ce5947f8c1a906052d12a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E0 10944 bytes
font_02_sfnt_off00010c0c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C0C 16792 bytes

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