PDF malware analysis — malicious · 3abfa8c7ba335c20

MALICIOUS

PDF

77.8 KB Created: 2021-07-15 08:47:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 1ff63e08de2200db5936bb3053adf201 SHA-1: 7ec07cf0be05a7259067de4a6a89c2d4926b4b12 SHA-256: 3abfa8c7ba335c2004f944b790691058054747597ea335ec44daeb7803021434

104 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of a visual download button lure, combined with embedded URLs, suggests the document is designed to trick users into downloading a secondary payload. The document body is heavily obfuscated and unreadable, preventing a more detailed analysis of its specific content.

Machine Learning

Nyx PDF Classifier malicious score 0.9163

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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/sq/ugae/~3/CHqDoFjlE84/square?utm_term=shaun+of+the+dead+full+movie+download+480p
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edbdd4a0f2ca3483ce729c/1626193364347/jofosusu.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec7b8c288cf71862a8c3fb/1626110860426/duo_factor_authentication.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e7e08e25441e1b37862cb3/1625809038581/sevabamozuketemepi.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60eda9b07daf0c15b06a8ce1/1626188208572/redur.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee93b84d490f6727569d16/1626248120510/77748920899.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8c8b04c181567023cab22/1625868464577/pazeki.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee57ec4d490f672753d55b/1626232813049/muzenoxoxolumexa.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000cdbf.bin` `cdf54b118023ae807dde4292858966a60d34951a8509679a9c7e9d441266baf8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCDBF	16044 bytes
`font_01_sfnt_off0000f712.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF712	16792 bytes
`font_02_sfnt_off00010f29.bin` `8e07befd559bace46628ce6e7441a1ea1becd7e3918604f57031a30d6a70ff78`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F29	11228 bytes

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