Malicious PDF — malware analysis report

Static analysis result for SHA-256 d11a9cafa8f6ef26…

MALICIOUS

PDF

94.5 KB Created: 2021-07-14 00:40:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5d8cb61ea7470af2dc3b96f9712afffb SHA-1: 90898fa12fae104924237e1c1ec96e0cb615b8dc SHA-256: d11a9cafa8f6ef26a810969d9005e314f33961beee7fff5e8a53760767213aa5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains multiple embedded URLs, suggesting a phishing or credential harvesting attempt. Although no scripts were explicitly extracted, the PDF format often utilizes JavaScript for malicious actions, hence the inclusion of T1059.007. The presence of external URIs points towards a potential initial access vector via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/nCRFBnYrBHY/square?utm_term=essay+on+impact+of+social+media+on+youth
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8e54b8fb24157da6d0d67/1625875787986/3603374990.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e88095f09bc23e177c9b5c/1625850005468/from_the_third_world_to_the_first.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee002f24c32e4364b7eeaf/1626210351646/when_to_watch_each_naruto_movie.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7955928bb5f4f515f176f/1625789785381/9898241599.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec9405a1b53f2c225f22ef/1626117126414/neburafeluwegex.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e7ef79a3609a707bacedad/1625812857953/80615104919.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e9263db132fa362073b3e1/1625892413878/kuxenoxibogezexexenuvezux.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec937df83a7f26ecd1dd02/1626116989943/solar_powered_electric_vehicle.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee048df6d8087912c2b700/1626211469238/intricacies_meaning_in_english.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec9569cd1a1204f6c9a94c/1626117481553/15315132513.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec7b4fad4a1a22a3e693d1/1626110799599/meaning_of_indend.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edb8ce54e5b71ae850db63/1626192078891/danny_new_kids_on_the_block.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_off00010e02.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E02 16792 bytes
font_01_sfnt_off00012619.bin
c1c796bff3894612f4153a002756f13c3a5d919545de4a5a69ef0d70c6524bcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12619 10980 bytes
font_02_sfnt_off00013f6d.bin
e705793304616fd2a6395dccdb6c8404034c37b4ac2beb12c6c257596d94c807		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F6D 16892 bytes

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