Malicious PDF — malware analysis report

Static analysis result for SHA-256 6126b3657a783832…

MALICIOUS

PDF

75.1 KB Created: 2021-07-13 17:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 8590b5339abf1d1bc17f880ee08fbe26 SHA-1: 09f5f25b58f27f4a0522786a5f712c84143be4cb SHA-256: 6126b3657a78383255abcc760b495d328da4b8f37885b0674ab326a369a76acc
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The presence of embedded URLs, though currently classified as benign, suggests an attempt to redirect the user to a malicious site. No scripts were extracted, but the overall structure and detection results point to a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7395

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/razvivatel/yapz/~3/1LSSs5qy-i4/square?utm_term=madam+meaning+in+usa
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec858ebdd82073f6ff41c3/1626113422647/examples_of_outpatient_facilities.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e9333bb132fa3620741c34/1625895739986/if_the_nth_term_of_an_ap_9_7_5.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e84b7f635b59766542e727/1625836415394/snow_treasure_questions_and_answers.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_off0000c5ca.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5CA 16792 bytes
font_01_sfnt_off0000dddc.bin
cefa3bd56eac5688082efb84b6a99d114a8459229a105f7e2df85f0e0635e1d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDC 16508 bytes
font_02_sfnt_off000108c5.bin
1ca1719c7241a94885d7455bac1bdda04f24dcb2b8ace6d90a16808fb93dfb37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108C5 10320 bytes

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