PDF malware analysis — malicious · 5b18bb31c933b12e

MALICIOUS

PDF

82.5 KB Created: 2021-07-16 17:42:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: f6fe8147619976d2357a63f4f48d666f SHA-1: 5a83ae7de117ab5ae7947619f7f1bf8299a47f6e SHA-256: 5b18bb31c933b12ec40657b734311d8f5ec9b7a1624d4126ae38959a87dc6437

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 phishing attempt. The PDF contains embedded URLs that likely lead to malicious content or phishing pages. No scripts were extracted, but the presence of embedded URLs and the ML detection strongly suggest a phishing lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9473

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/razvivatel/yapz/~3/nCRFBnYrBHY/square?utm_term=find+data+in+specific+cells+in+multiple+worksheets+using+vba
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f094f9dc16cd5d363d44f9/1626379513520/stages_of_globalization.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e932c9aa30721e65efbcac/1625895625704/copyediting_and_proofreading_services.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60effeef97dca740078d91db/1626341103079/sexual_reproduction_and_genetics_chapter_10.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f125029b6f23611956ab6b/1626416386833/if_i_throw_it_back_is_it_fast_enough_lyrics.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f1749246c0d74f87e1ee02/1626436754834/48625325022.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee40bcdf274736e0abcab5/1626226876160/auditor_general_for_local_government.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60edfa9a24c32e4364b75aee/1626208922718/final_cut_pro_lower_thirds_templates_free.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60edb3cec8cbd011b90dfc2a/1626190799034/xidosuvowimikirorifobalev.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_off0000dbd8.bin` `ade7d271d9d358eb79b94e493a4c7fcb15df35f88e48f929bf0de6015e64c83f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBD8	17948 bytes
`font_01_sfnt_off00010acc.bin` `12b0341a45be7df55940c58cf5c1b39fd7a5d96b492067926dd950b722677b65`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10ACC	11528 bytes
`font_02_sfnt_off00012589.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12589	16792 bytes

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