Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d975980fd62abe0…

MALICIOUS

PDF

84.3 KB Created: 2021-07-18 20:36:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cfce49f062efd73b3f9f3e71c788eeb8 SHA-1: 2855ea6ca31dea14c68b21cc09491f2c9d3a4e76 SHA-256: 1d975980fd62abe0268a12f6af1a032a48fb4c74a3cd848529c30e692aa8a56d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated maliciousness. The document contains embedded URLs that lead to external sites, suggesting a phishing or redirection attempt. Although the document body is heavily corrupted, the presence of these URLs and the heuristic firings strongly indicate a malicious intent to lead the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6359

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/NsX9ihectO0/square?utm_term=pokemon+gba+games+with+mega+evolution+and+z+moves+and+gigantamax
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec93b458d864752e026b56/1626117044185/miscarriage_without_knowing_you_were_pregnant.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8e0b78915684aa539907b/1625874615180/do_possums_carry_their_babies_on_their_back.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec8cdd5f8bf969071e68b6/1626115293605/graco_baby_monitor_troubleshooting.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_off0000e25b.bin
ef9013ed837bff1ce49fe9cd9f3c6664666da9c95e7559e64cc1c84c10da9c94		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE25B 19260 bytes
font_01_sfnt_off00011300.bin
7f80a62779f5803a276f8af3f6ea849e7214b542ba806ec9fa8c893b5cb9e858		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11300 11244 bytes
font_02_sfnt_off00012d1e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D1E 16792 bytes

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