Malicious PDF — malware analysis report

Static analysis result for SHA-256 111c740ff89b8846…

MALICIOUS

PDF

80.3 KB Created: 2021-07-18 01:17:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f6f0ec006f4575b98457892cbcd1f06b SHA-1: 547e350a9202bf68fcad62dec5f496febe5164bd SHA-256: 111c740ff89b8846bdb343f64d05c9589ad43728db0264e960b3adc72972424c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected by ClamAV as a Pdf.Phishing.Trojan and ML classifiers also flagged it as malicious. The PDF contains embedded URLs, suggesting it may be used to lure users to malicious sites or download further payloads. While no scripts were explicitly extracted, the nature of the detection and embedded URLs points towards a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6221

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/kVSxLQpkboc/square?utm_term=motorcycle+parts+list+pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e812ad57d2352c927e9be9/1625821869843/10217134063.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0e3126e9a9a494aa185de/1626399506472/fuzavimulomigorunulal.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8278a1d61f435cefaf6c4/1625827210900/brochure_templates_cdr_format_free_download.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_off0000da47.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA47 16792 bytes
font_01_sfnt_off0000f25e.bin
876f747c8fc05a87c11e6ae4df4d78ebb6edaa605f433d32a73c59a464f62ca8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF25E 10616 bytes
font_02_sfnt_off00010ace.bin
00495209db546a410b1b584a6584384013763898ad1e553ba9b6f157238ef221		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACE 16464 bytes

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