PDF malware analysis — malicious · 957f7e2902bbfd1b

MALICIOUS

PDF

109.1 KB Created: 2021-07-19 19:14:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: bb234fb9bd45cc647f96c6e222875703 SHA-1: 12a2f33bf9f9a749c2998c9598d7c7b89c6d0f3d SHA-256: 957f7e2902bbfd1baa96da28e6b56441d427afee6e1037463767d342577069a7

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests an attempt to redirect the user to external resources, likely for phishing or to download further malicious content. No scripts were extracted, but the PDF structure and embedded URLs point towards a common phishing or malware distribution tactic.

Machine Learning

Nyx PDF Classifier malicious score 0.5305

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/sq/ugae/~3/hIkXU_AiHkM/square?utm_term=naughty+question+and+answers PDF link annotation
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8baf9a7bae82fe8959d94/1625864953227/fixemuxutobotur.pdfIn PDF document text
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7a04d0153e73bf8ad8ad/1626110468503/17224866471.pdfIn PDF document text
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f4ad5054c26a0cc30ae144/1626647888578/32307664745.pdfIn PDF document text
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8e981951226b8b8b8536/1626115736892/fidipulas.pdfIn PDF document text
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e856469717274917698826/1625839174930/transmembrane_protein_in_cell_membrane.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000125f9.bin` `8af86b5af9d6833b9100c1b70561e022acfb8439af64e194d163cc00df057228`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x125F9	17060 bytes
`font_01_sfnt_off00013ea5.bin` `49ffbce83213091c37caceafcab73a8d53865bdb62449aa189ea3fc610e81ba8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13EA5	10904 bytes
`font_02_sfnt_off00015766.bin` `dfafc461e5b79a2abc81eaeafdfb971c4c61002bf9be940f833018ddf83f2553`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15766	21484 bytes
`font_03_sfnt_off00019044.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x19044	16792 bytes

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