Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bb997a5fb124dcc…

MALICIOUS

PDF

93.3 KB Created: 2021-07-20 21:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 568e8638c63b63a1fe162aebfebc57bf SHA-1: a17ff80568571479d7e073b4f6c00db05ecb2cd4 SHA-256: 1bb997a5fb124dccdf0955cc98eb0e1cc9ac7e2d20a8872dcd40fe9e8fcbf553
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 the user to a malicious site or download further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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/HbdJGeoIq_s/square?utm_term=temperature+humidity+dew+point+chart
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f6ec52b132f116bdbd65a8/1626795091426/ebook_for_banking_exam.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f65426aaa8396677179eb0/1626756134730/48261571295.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f36101fb6d8f5e805963f0/1626562817364/meforuxomijunamep.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee7cc3e7148d06bc747225/1626242243524/motatitetipozopajit.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8d20ba15cb06cdb5e4c65/1625870860020/50015600702.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee18ecb1dcdf258da521eb/1626216684479/technical_analysis_for_the_trading_professional_free_download.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ede6e03e01114371292f7c/1626203873059/vawavumexumufazudodibas.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee8a3a114e6b7b7deaeef6/1626245690524/67265559093.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f6f664f1decb422b663e68/1626797669163/27344626098.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f34d43e615ea111e699c15/1626557763435/pugotubelewugiwuvuj.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_off0001062e.bin
ba8be4a8e70ec0eb0ec04de32554b1a874444f1484881d9d0f6e9054ad5a09e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x1062E 10828 bytes
font_01_sfnt_off00011f08.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11F08 16792 bytes
font_02_sfnt_off0001371a.bin
c7ddd430c239c48efc8f8452a42c57d6288b0314d46f530c3dca47f6918713f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x1371A 18704 bytes