Malicious PDF — malware analysis report

Static analysis result for SHA-256 15e5184e11c4f89f…

MALICIOUS

PDF

95.7 KB Created: 2021-07-12 23:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 95fe1029ab2a18d455b07ab08dc0f8ce SHA-1: f095ab0072ec8049db1abb6bb3cf17eef867a521 SHA-256: 15e5184e11c4f89f64fe3444cce9a55a81733f87c3843d70fe96790f57a31375
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The ML classifier and ClamAV detection strongly indicate this PDF is malicious. The presence of embedded URLs and the obfuscated document body suggest it is designed to lure the user into clicking malicious links or executing further payloads. The wkhtmltopdf authoring application is unusual for a malicious PDF, but the overall indicators point to a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8172

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/UkUWPC8UKDU/square?utm_term=to+want+in+spanish+conjugation
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8bb533add050c1b4a5d81/1625865043965/dakexalizimizozarewedegi.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ecabb4af807f1e15295c72/1626123188880/wegolekavisezepijikev.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e9483a320dbd0de28237bc/1625901114974/need_for_speed_rivals_ps4_2_player_split_screen.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec9b7e69d4b633614924ec/1626119039082/19445165342.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e871291ab7d215194f20b0/1625846057998/how_to_summon_moloch.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_off0001107d.bin
cca954458a4945f159a2afe88b32fda1cbdd990c0a25086e3a264bf4e6e39fe9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1107D 19332 bytes
font_01_sfnt_off00014284.bin
7905388a79c59028e8c42f936e7a6ba223f7d5e10f1f9b270cfe228e4498d9ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14284 10656 bytes
font_02_sfnt_off00015af1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15AF1 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.