PDF malware analysis — malicious · a441609e9b84bb27

MALICIOUS

PDF

79.6 KB Created: 2021-07-19 05:41:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 5cea7b4f74685e538c27cfe7f4699228 SHA-1: 40adfdd920ef4d9146b33ce6f7e5257578254bdb SHA-256: a441609e9b84bb277f2aebb023aa80c05101b0c5756a88304a254a7c023d2aad

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The presence of embedded URLs, although many are marked as benign, suggests an attempt to redirect the user to malicious content or download further payloads. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall indicators point to a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9478

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/iXsW93xxTQA/square?utm_term=dr+jekyll+and+mr+hyde+download+pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f176c2fcdff1298e588d9f/1626437314624/30190820542.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ededa82799685454fad081/1626205608142/46683790394.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60eff48f39c5d52effb5f46f/1626338447657/1_bedroom_double_story_house_plans.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f403520dbab00e46e939ee/1626604370676/bcl2_associated_agonist_of_cell_death.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee18ca537273346e2ccef2/1626216651069/nixonajarazidivutofik.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edf49177fc8e778b59b500/1626207377832/avail_meaning_in_bengali.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee893f39b82603386e45f7/1626245439445/zofedog.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f28781c5d9e6782cd90d93/1626507137561/most_difficult_names_of_bollywood_movies.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_off0000c9ba.bin` `dc11506e932e2bf96d89a786506167d6aac115d14e07b65a0065c7c84bd81225`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC9BA	24536 bytes
`font_01_sfnt_off0000ff97.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF97	16792 bytes
`font_02_sfnt_off000117ae.bin` `b612e1ba1aac25723f3efe72f3ae4ad0ea0cbc670f9e0a8e1308e95db605884f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x117AE	10828 bytes

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