PDF malware analysis — malicious · 5c79e94b7a8e79bd

MALICIOUS

PDF

83.4 KB Created: 2021-03-03 08:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f6a5fbc2812035c4e2d8f8946cf9bb29 SHA-1: 75c6c4168fc2a9fcdad7fbfe6c69c6e9df11ad82 SHA-256: 5c79e94b7a8e79bd5a01611cb1d6327e1e688a3063da905820068aaac8f351d4

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to 'pdf' and 'page 44', suggesting a lure. No scripts were extracted, but the presence of external URIs and the overall detection profile indicate a phishing or downloader attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/123?utm_term=as+bill+sees+it+page+44+pdf
- http://vamoktin.ru/barber_logo_psd_freee6e52.pdf
- https://static.s123-cdn-static.com/uploads/4374380/normal_6002bb8366e5b.pdf
- https://static.s123-cdn-static.com/uploads/4388063/normal_5fc9ba677df1f.pdf
- https://cdn-cms.f-static.net/uploads/4426413/normal_6033f1cbd11cf.pdf
- http://instapresent.site/marifigafuburuforake35yne.pdf
- https://cdn-cms.f-static.net/uploads/4480582/normal_5fd9df364f574.pdf
- https://static.s123-cdn-static.com/uploads/4481509/normal_5fcd52b7df6a7.pdf
- https://cdn-cms.f-static.net/uploads/4469106/normal_6026e7873a5e1.pdf
- https://static.s123-cdn-static.com/uploads/4426060/normal_5fe29c7289ffa.pdf
- https://cdn-cms.f-static.net/uploads/4387701/normal_5fea248f4e135.pdf
- http://akvatehnika74.ru/cheap_thrills_320kbpsszdxk.pdf
- http://creamspait.xyz/gadapauy93t.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/retisovojor/38916964577.pdf
- https://s3.amazonaws.com/boxalewijim/divergent_trilogy_movies_in_order.pdf
- https://s3.amazonaws.com/metakibeme/the_yearling_chapter_12_summary.pdf
- https://s3.amazonaws.com/kujapomib/business_math_grade_11_worksheets.pdf
- https://s3.amazonaws.com/lonozote/cabinet_drawer_hardware_installation_template.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_off0001086e.bin` `e265423bdbd1ac46ebd20b3a89eadd346a9fae64e9947621df346f1af092de21`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1086E	5328 bytes
`font_01_sfnt_off00011aad.bin` `980739424e4e7505119ef1fc0f3faecd46a95a84c36cf1809960da1088f0c805`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11AAD	11124 bytes

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