PDF malware analysis — malicious · 851bffa9c9779994

MALICIOUS

PDF

82.6 KB Created: 2021-07-23 00:01:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: d79c6d026924651bb9116bf9cba143af SHA-1: 97163d2daa3d8bb515999d0a5967810d0f9c109e SHA-256: 851bffa9c97799949ad048b3694fee8419d3099792bb60b0d28acc6f1a0924df

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, even those initially flagged as benign, suggests an attempt to direct the user to external resources. The PDF structure and embedded content are consistent with phishing lures designed to trick users into visiting potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9960

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/-MXWpcYQ7kA/square?utm_term=can+i+alter+a+pdf+file
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e9197137da2614570ddd7e/1625889137701/definition_of_manual_dexterity.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f295a2b84a576e6cf8710a/1626510754552/instrumentation_technician_interview_questions_and_answers.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f28192c2d40e67ec0221ca/1626505618251/71804222685.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f68125132d7d1ce065466c/1626767653624/your_dreams_are_mine_now.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e914a5c22c005c93382e38/1625887909328/pokeflute_cheat_code_fire_red.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f89464d35d04529b260ca0/1626903652234/kadejixeresi.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f48ba8cba7b71501f36d87/1626639272045/group_of_birds_are_called.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec7d815f604029b990da3b/1626111362050/85440104737.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f87777c2de402a3e557ef1/1626896247693/the_law_of_cause_and_effect.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f8491f0d68c804f5753de3/1626884383300/ooad_question_bank_with_answers.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60eff29b365a201d3c38c616/1626337947337/just_awesome_meaning.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec81594a8bde38c3449b12/1626112345376/mesakebux.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f0d708f4841313e5bc1df4/1626396424342/91414578351.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f45a9c70ff22042a0eeb74/1626626716227/begumalepas.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60eca2f35338e9546e4a0a54/1626120947594/device_migrated_external_hard_drive.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f33f9129712869f0664267/1626554257129/40294882062.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8a147261b7f2579aa7d67/1625858375885/what_is_meant_by_the_human_condition.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f61e60ea390a02402d79ee/1626742368895/46471413258.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e906bcdc37083541b7a556/1625884348878/94207134362.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f4314a54c26a0cc303d5a0/1626616138588/reheating_pizza_in_air_fryer.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f1835915846f0d14eed75c/1626440537235/rdr2_perfect_alligator_skin_uses.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f9dc8ae40fde07fa5f99e1/1626987658693/jakugo.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e95bd12f3c4128e18c1afe/1625906129817/siwuvelunewosoxu.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_off0000e47b.bin` `23f89f4f1b2d6edf661fbcf7bcf026e1979df34a02729b30d1d8a7dcf812ffdc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE47B	10232 bytes
`font_01_sfnt_off0000fb85.bin` `b8d31f4a41578cfc85246c41fd40471cb9dfc263470bd58c519af727030da212`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB85	16144 bytes
`font_02_sfnt_off0001254e.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1254E	16792 bytes

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