PDF malware analysis — malicious · c0d52208d902a4b1

MALICIOUS

PDF

77.4 KB Created: 2021-04-05 19:25:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8b3b89f508fbfcf2fe8d0c15a0136ce0 SHA-1: 49f9745956d88fbc7bdb799d87987495d28da592 SHA-256: c0d52208d902a4b1ef69a505abaff1dc05635a2eb4d2514ca9316127ab08d01c

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URLs suggest a phishing or malware distribution attempt, likely to trick users into downloading further malicious content. The document's content, though heavily obfuscated, appears to be a lure related to 'firmicutes bacteria' to encourage clicks on the malicious links.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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://gimoguvi.ru/award?keyword=firmicutes+bacteria+pdf
- http://moitender.org/dell_620_audio_driver_downloadi2ufh.pdf
- http://helplnstagramcontact6088756.com/gaponibejarubi5wepm.pdf
- https://cdn-cms.f-static.net/uploads/4424331/normal_60308473db75c.pdf
- http://select-get.top/551478075556iex9.pdf
- https://faripolugariwel.weebly.com/uploads/1/3/1/4/131453512/lutinesakikerirobet.pdf
- https://static.s123-cdn-static.com/uploads/4391013/normal_5ffe7f90687df.pdf
- https://pumejikugo.weebly.com/uploads/1/3/0/9/130969330/01a8ffb4023bd2b.pdf
- http://jetulugu.iblogger.org/4667841887.pdf
- https://ruzopujiwinor.weebly.com/uploads/1/3/1/4/131452977/wafazevamikez.pdf
- https://cdn-cms.f-static.net/uploads/4411702/normal_60688343addc4.pdf
- https://cdn-cms.f-static.net/uploads/4421957/normal_604f1c6502c58.pdf
- http://womotov.22web.org/chronicles_of_narnia_full_movie_online.pdf
- https://metifipiwe.weebly.com/uploads/1/3/1/1/131164131/sarek_xukoxugipus_vebolimi.pdf
- http://calipshatngaccs1.xyz/455185517223jjik.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://gekeweluzal.epizy.com/gejewerumese.pdf
- https://fae5df41-d68b-4d62-9961-cd33801cec7e.filesusr.com/ugd/f52c73_aa0db091b252426faad3b04a242985e0.pdf?index=true
- https://f1cb2ec4-a82d-4768-8a06-5236a2db220e.filesusr.com/ugd/a2e20a_09f50554de50457aa071bac9177e9a39.pdf?index=true
- https://uploads.strikinglycdn.com/files/188e16e4-9cc8-41bb-a886-50344c6282c3/xebudat.pdf
- https://uploads.strikinglycdn.com/files/44a6ef33-5629-4bbf-9ce6-e7ea2b4749c3/10592330925.pdf
- https://ce722411-b424-48ee-ac00-b4ed8818edd9.filesusr.com/ugd/bff0de_40362236109a4133855a6fb37efc7038.pdf?index=true
- https://uploads.strikinglycdn.com/files/c6859115-0e6c-46f1-a436-6c439d6c6e21/45768523674.pdf
- http://vipuzot.rf.gd/6942778947.pdf
- https://9d3edb37-11ce-4d87-b861-4f8d850d55a0.filesusr.com/ugd/0d2aa0_470ee2647c2441e09c0dade60f16f67a.pdf?index=true
- http://wofodobakazonox.epizy.com/clorpromazina_ampola_bula.pdf
- https://uploads.strikinglycdn.com/files/b07216c6-b8b0-4ae9-a7ba-1d78315b37d8/18187464700.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ee2f.bin` `a51d79e0024bbec89c02b5da5495ef791a2d8a8cba7d23c3d552a0a60f29cb5a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE2F	5364 bytes
`font_01_sfnt_off00010054.bin` `b8e3bd01b5b89943516783ce18b40f4926e989b6c603ac58400ab4027082b2aa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10054	11896 bytes

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