PDF malware analysis — malicious · c15c3162c36ec1bb

MALICIOUS

PDF

78.1 KB Created: 2021-07-15 14:36:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 02e40190c17e91eaa7165dee27c95421 SHA-1: 78454f864f56b16be8e692b3fdafe2dc7455493d SHA-256: c15c3162c36ec1bbac661872f4a28a532fa32e8b654f6e8b3ff9d9fd837ffdb7

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample was identified 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's designed to lure users into clicking malicious links, potentially leading to phishing or further malware delivery. No scripts were extracted, but the PDF's nature points towards exploitation of user interaction.

Machine Learning

Nyx PDF Classifier malicious score 0.9478

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/sq/ugae/~3/iCUEKX862tE/square?utm_term=insufficiency+fracture+knee+treatment
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec9034e4ca3800a118ac10/1626116148459/zudizosibafotozibub.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eff6bc3015c64070c95bdf/1626339004930/33153380902.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edec3dc450ee473080988c/1626205245278/23848200366.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edfdb88443ee2c89337dbe/1626209720965/find_the_perimeter_of_an_equilateral_triangle_with_side_6_cm.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee7035115d504d3a8976a6/1626239029731/how_to_export_tiff_from_illustrator_with_transparent_background.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec90e411a746407a426088/1626116324177/97647411980.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e8f1fcf492d21a0f68e93c/1625879036851/paresthesia_one_side_of_body.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e9097c8ce0e10532d1de45/1625885052816/puripitomutuki.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_off0000d1d4.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD1D4	16792 bytes
`font_01_sfnt_off0000e9e6.bin` `dd6ccdb35238b3a8adf6707e84bce8b4bb95ee0e37f0a5a8335e755906b5c821`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE9E6	16208 bytes
`font_02_sfnt_off000113ba.bin` `ce2585f5fb1242cabee2f0ae5c30a9161aa864d12e085b0309fe0696698de598`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x113BA	10588 bytes

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