Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2bc5e33e15da6af…

MALICIOUS

PDF

75.1 KB Created: 2021-07-14 06:27:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 028c6c2faab9d3575f4ef43054b3b2d5 SHA-1: 259a2e7f248d4d5a84380b7970e84eaaa81d347c SHA-256: c2bc5e33e15da6af300858c0036cf23aa1d13ca69ca62f364dd01cf801e51991
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The presence of embedded URLs suggests an attempt to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are consistent with common phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9163

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://feedproxy.google.com/~r/sq/ugae/~3/0YvHz_IItD0/square?utm_term=1+quart+of+water+in+ounces
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8c589aba27f4cd4bd5dd7/1625867657344/gunimasa.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee4a592a4cda17625edf97/1626229337884/38091730788.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee1074f6c772366d2a7ee1/1626214517108/learn_routeros_second_edition.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee3d982d09e34b72a042c7/1626226072539/wobejeju.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edc62430d23a7550610281/1626195493074/datumi.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e93f1b309bd63f3d86ffe5/1625898779255/baltimore_radio_stations_online.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee32def72ce0266e0f12f7/1626223326269/gisusewoweviwuwiliwosa.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_off0000c66b.bin
c06cec2463b53ad93f7902f6a942853868a2abb7b08b573871e35121105189b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC66B 10572 bytes
font_01_sfnt_off0000dec5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC5 16792 bytes
font_02_sfnt_off0000f6d7.bin
182ee4808d123d7baf7995ce2c0ac21e4efb4ddea01e069ceac000d312d7c32f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D7 16260 bytes

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