Malicious PDF — malware analysis report

Static analysis result for SHA-256 9869c05377218b57…

MALICIOUS

PDF

79.5 KB Created: 2021-07-19 02:38:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c4f00c07dfe2ca8659fb6cba11e8bbc7 SHA-1: a2f997ccaab40ee04cb56a172d6a4a9cc7f73837 SHA-256: 9869c05377218b57fe75ccc563a01f7b5759638dfd681c57c525109f5f466156
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. The SE_PAYMENT_REDIRECT_LURE heuristic indicates the document's content is designed to trick users into changing payment details. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's intended to facilitate a phishing attack, likely by redirecting the user to a malicious site or presenting deceptive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/pL_UGxDroB4/square?utm_term=chapter+5+cash+flow+statement+solutions
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f0282c8fff8309febb8ebe/1626351660831/84926429637.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e798d552059f1ec1e0227d/1625790677230/watch_pitch_perfect_online_123movies.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f4b3f7cba7b71501f5eee2/1626649591990/certified_ethical_hacker_version_9.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7ac994261ba79805eae50/1625795738089/fametisabamun.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f3cab032548145d78fcb38/1626589872962/height_weight_chart_female_in_stones.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee3eeb114e6b7b7de70ae7/1626226411277/pukararuzametes.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee36ab7d49fb55d626f895/1626224300087/creedence_clearwater_revival_doug_clifford.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f31dd92e59700d3e5b7fe5/1626545625333/pipe_fabricators_blue_book_free_download.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f4a8791434f6354732e40c/1626646649776/ruzalukedo.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_off0000d4bb.bin
cd5f773d7ecddbb7fd0ae05e92798aedd1799ea84a536a7586890e8d21c14556		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BB 16604 bytes
font_01_sfnt_off0000ffbc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFBC 16792 bytes
font_02_sfnt_off000117d3.bin
731b8a409904e3675d33c28afac258235fd8338c447c8849559cc0a5a929fb97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117D3 11096 bytes

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