Malicious PDF — malware analysis report

Static analysis result for SHA-256 19e6f720a789c5a4…

MALICIOUS

PDF

114.2 KB Created: 2021-07-15 11:49:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d1ca0c30705f618cfca256bedafc2512 SHA-1: 753faef77109b81156debb637e7fd65e0fa46f2d SHA-256: 19e6f720a789c5a4d7cd9624f36f23ca2d1ebea4e8f87343c3727ee44cb50be0
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 high likelihood of malicious intent. The presence of embedded URLs and the PDF structure suggest it is likely used as a lure for phishing or to download further malicious content. No scripts were extracted, but the PDF structure itself is suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7996

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/gPkW7oTCsL0/square?utm_term=reinventing+government+pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec9f701951226b8b8d8bb6/1626120048578/mother_perpetual_help_church.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee17087d49fb55d6246a13/1626216200413/come_on_and_bless_the_lord_with_me_chords.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e923db854c1d3b34870ac6/1625891803997/zejizejigom.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee226f0981f36585a0250a/1626219119687/26794077417.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec7d28b6dedd3ae16818a3/1626111272615/68551717623.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_off00015e58.bin
0f84d851f3ac26fe051f518dc1a23015929a1db86c3ffd041863340c978ce400		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15E58 17176 bytes
font_01_sfnt_off00018b3d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18B3D 16792 bytes
font_02_sfnt_off0001a354.bin
57ca0c21965a6c0be014478a650196e7f3a5b2d6ca091511c7044d7fcdc6df88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A354 10576 bytes

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