Malicious PDF — malware analysis report

Static analysis result for SHA-256 dba93ca00599d1a0…

MALICIOUS

PDF

102.4 KB Created: 2021-07-18 03:39:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: abc15fb3a6df47f9c4ec55080ed2a5b0 SHA-1: 466235fd68bb2ed6126ab58317a29aa52b968c69 SHA-256: dba93ca00599d1a0c8114ff0ef41b2925eacffe5b4fcff6ab553ea9726a9adc0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI that points to a suspicious URL, which is a common tactic for phishing or distributing further malicious content. No scripts were extracted, but the presence of the embedded URL and the heuristic firings strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5608

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/razvivatel/yapz/~3/UkUWPC8UKDU/square?utm_term=famous+trumpet+instrumental+songs
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8ff7166be7e490f0e3612/1625882481539/alice_bailey_ponder_on_this.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8d48d781e3e37a185bad5/1625871501655/xifegadujanorovesareli.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f350347e0b4d5f6b1adbeb/1626558516232/tiluwizowexi.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_off00012dc1.bin
55dc324fbbeaf3b7f38e1a9a00af791be25440293f1a981174acc61375fe021d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC1 18140 bytes
font_01_sfnt_off00015d1b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15D1B 16792 bytes
font_02_sfnt_off00017532.bin
6abab4e721a562d7048143929b6421d15b31cb4ffce433526299ebd2e1985635		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17532 10672 bytes

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