PDF malware analysis — malicious · 8ac1b28e5590553e

MALICIOUS

PDF

81.2 KB Created: 2021-03-19 19:39:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0ac9cdf6b0559db2fab24175cb5977fc SHA-1: 7d2d3fcf172847a661fb40fadf9ad7e6cde1951f SHA-256: 8ac1b28e5590553e3eacfbb7bc3e55b798bdc2669181768db120eb926b209f24

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF that contains an embedded URL pointing to a domain associated with phishing lures. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains references to 'google pdf to word converter free download', suggesting a social engineering pretext.

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/award?keyword=google+pdf+to+word+converter+free+download
- https://static.s123-cdn-static.com/uploads/4386848/normal_5fcdc02c1d7d9.pdf
- https://static.s123-cdn-static.com/uploads/4379626/normal_5fe50b08a6f70.pdf
- https://static.s123-cdn-static.com/uploads/4488116/normal_5fe16c16e3df3.pdf
- http://dakajak.medianewsonline.com/nanoxefuxera.pdf
- https://cdn-cms.f-static.net/uploads/4388825/normal_6034d52095aa6.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://s3.amazonaws.com/widiku/dakoxamipusiwix.pdf
- http://dexivovadoxexo.myartsonline.com/the_art_of_graphic_design_bradbury_thompson.pdf
- https://s3.amazonaws.com/mupukesunobaga/happiness_movie_free.pdf
- http://kamisobota.epizy.com/advocacy_coalition_framework_sabatier.pdf
- http://najexenij.onlinewebshop.net/sowugogisuvaverilubej.pdf
- https://s3.amazonaws.com/setaxilitozuko/28129170193.pdf
- http://pubuwaxofivu.epizy.com/alp_answer_key_2018.pdf
- https://s3.amazonaws.com/jivagajamav/does_apple_magic_mouse_2_have_batteries.pdf
- https://s3.amazonaws.com/betefowubevat/ringtone_incoming_call_iphone.pdf
- https://s3.amazonaws.com/legobegutulo/86729922885.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f1e0.bin` `7ce083d0cc18884800718028f1c0bfe6ba4000939cc02bc915b1f085c0ca77d2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1E0	5068 bytes
`font_01_sfnt_off00010349.bin` `82a94756bcb136418716343ace7ec623e88bc3696cdd7a1f3d02d14d6407bc9f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10349	11128 bytes
`font_02_sfnt_off00012949.bin` `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12949	4324 bytes

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