Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a4947359f25987c…

MALICIOUS

PDF

83.8 KB Created: 2021-07-13 23:30:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ab7b8950eba860a5f7efb29f47b0461c SHA-1: 277abf97aae090ba34e3036ceff860da3eed51f8 SHA-256: 9a4947359f25987c4b0cb01d0465d09bf649478eeca301931d4b9fa6db6f87e6
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The heuristic firings indicate the presence of external URIs and embedded URLs within the document. The primary IOC is the malicious URL, which is likely used to deliver a phishing lure or download a secondary payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.0989

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://queure.ru/square?utm_term=the+ideal+muslimah+pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8faa319a9f87deb713d2b/1625881251521/xitaduwisutorome.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc59.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC59 16792 bytes
font_01_sfnt_off0000e470.bin
1fdefc590cb53380a086e3856066c5f5ec8b2427ddc00a39e249d3d8acfe8543		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE470 10404 bytes
font_02_sfnt_off0000fbea.bin
75989dcdc0b96b51bdf2c387c2b472302a2e8398c83521a6c8e3aca85db55250		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBEA 17184 bytes
font_03_sfnt_off000128e0.bin
9902c5df28f9984f33b6a67d9efadf1275d0b7b8864ef7a8d08253c4c66cdfb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128E0 17616 bytes

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