PDF malware analysis — malicious · 6a56c6b825d33ba3

MALICIOUS

PDF

80.1 KB Created: 2021-04-03 20:13:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 14b5fa3f01d7b55d3383ddc3f8993c1e SHA-1: 7ba8c1c7d94b8a4464c34382c4b7b2198a3acaf8 SHA-256: 6a56c6b825d33ba37610a36b6c22c8f5266bd4f1df68148e021413d5df893155

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL that directs users to a site offering a 'free download', which is a common phishing lure. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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://jacksth.ru/award?keyword=anthropology+indrani+basu+roy+pdf+free+download
- http://cafe-cok.ru/26660619395yrpwp.pdf
- https://cdn.sqhk.co/bogabixexuja/fIggaws/fovojukagapenamejage.pdf
- http://strapslap.online/koruxivusugeveguspz4t.pdf
- https://static.s123-cdn-static.com/uploads/4373239/normal_5fe10bebe69b3.pdf
- https://cdn.sqhk.co/dekaroku/383ic5p/fonerawosorifosotuwu.pdf
- https://cdn-cms.f-static.net/uploads/4377717/normal_60402ee293b8c.pdf
- https://cdn-cms.f-static.net/uploads/4500882/normal_5fdbfac0ae78e.pdf
- http://bt-management.website/nafeponojimataxikuforapeo713e.pdf
- https://cdn-cms.f-static.net/uploads/4482631/normal_6041d5cd97448.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/fukezavazuj/what_is_yes_and_no_in_arabic.pdf
- https://s3.amazonaws.com/savukojubusum/7486372805.pdf
- http://girifej.epizy.com/roman_breviary_in_english.pdf
- https://s3.amazonaws.com/wupagivoz/xepuresutira.pdf
- https://s3.amazonaws.com/fopalew/how_to_download_audio_drivers_windows_10.pdf
- https://s3.amazonaws.com/palevijuj/bollywood_movies_links.pdf
- http://zexukojol.rf.gd/40722503247.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
- 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_off0000e5c4.bin` `360250756d5f0ef2d069fa7151ff69cb2fe707d045d7c018bbaa98a03dee67cd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5C4	5628 bytes
`font_01_sfnt_off0000f8fb.bin` `c65d016c8456bf0a6eb8330ddb19555b15d35c1650db28fa65df9c26d21a53e4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8FB	10668 bytes
`font_02_sfnt_off00011db2.bin` `39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11DB2	16092 bytes

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