PDF malware analysis — malicious · 0d257ba1f06c93b1

MALICIOUS

PDF

86.8 KB Created: 2021-07-19 08:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 727a7168b271044eb48a1ee1a5288491 SHA-1: c379c18cd50ff2ac35c75c6f6a523f7d5eac82b5 SHA-256: 0d257ba1f06c93b1c536875eb0b4eb021e61c796708d20eee29019592e3b2090

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating it is likely a phishing or malware distribution attempt. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to lure users to external resources. The file's structure and heuristic firings point towards exploitation for client execution.

Machine Learning

Nyx PDF Classifier malicious score 0.9526

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/razvivatel/yapz/~3/IdU8rIDf9lQ/square?utm_term=soil+is+composed+of
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8532855c0ff04c7ff14e1/1625838376549/61755755100.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f1aa4dfb18473b3abcbf11/1626450510044/xixavigososekisil.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f4e432c0fa6a1644f1158e/1626661938657/nodezuvelevoz.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e912642dabf2723553be5c/1625887332459/what_is_the_sin_of_pride.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f3229bdb752c5e49a948a3/1626546844052/toastmaster_pressure_cooker_troubleshooting.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee575f9c71001bedf78c06/1626232671675/letters_beginning_with_r.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8d6bdef1ca41d5f9c30f/1626115435433/tubemate_exe_download.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60edddfa017ec663b53c4f97/1626201594329/how_to_draw_bat_wings_easy.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_off0000f3e5.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3E5	16792 bytes
`font_01_sfnt_off00010bfc.bin` `fdea7635183e64cc5cbacd0267be0f24f762cb5d54a9704cdb3a6ae5622a9716`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10BFC	10392 bytes
`font_02_sfnt_off0001236a.bin` `5fa6d875dfab8818b28b10a42d2f6373d44a52df52b9e3453975e95bb7b20d76`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1236A	16900 bytes

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