PDF malware analysis — malicious · e7bf81e9db4551a8

MALICIOUS

PDF

86.8 KB Created: 2021-01-11 18:42:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 50d1450dc4b139bcf960809982a9e216 SHA-1: 171dfaee820293e1f66876089528afae09cc2207 SHA-256: e7bf81e9db4551a8252ee8c880fd3df504145b2a4701c864cebf104b21e0d5fa

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafffi.ru', which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text related to 'el camino movie answers', suggesting a lure to entice clicks on the embedded URL.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/aws?utm_term=the+way%2528+el+camino+movie+answers PDF link annotation
- https://cdn.sqhk.co/gototovubuwi/ajigBje/guvojonoluwupewuvub.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486522/normal_5fb77a9e57288.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4500665/normal_5fd62c0e50fd3.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4464870/normal_5ff160347d6d0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379605/normal_5f9192aa7d780.pdfIn PDF document text
- https://site-1168177.mozfiles.com/files/1168177/gcse_periodic_table_worksheet.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383794/normal_5f9f945fd9e49.pdfIn PDF document text
- https://cdn.sqhk.co/makafabakuna/WieZVjj/piano_tiles_3_para_pc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408707/normal_5fc2c9466fa08.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/gixawetopoli/iron_horse_armory_rockledge_pa.pdfIn PDF document text
- https://s3.amazonaws.com/lorifumofelu/19092955299.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0001157d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1157D	5320 bytes
SHA-256: `1d699fcc68edd35faa106f75c3e1a672f2fef2182f1ef59d187f80915f6d4182`
`font_01_sfnt_off0001278f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1278F	11904 bytes
SHA-256: `46f5b1f67a0c1ebf5fa2fbb47bc0091344b018136f09fab29f9c1de4d84af4dc`

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