PDF malware analysis — malicious · 83f6653651c3e4c3

MALICIOUS

PDF

75.6 KB Created: 2021-02-23 04:53:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c45656ad4e025809d8a5ca13dac1aa05 SHA-1: 02f0f77710d6d44444f62bc36bdd49b34ad11324 SHA-256: 83f6653651c3e4c396b1d1e27398d640a15e0f4e82494ae98bb5139477cadde8

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, suggests a lure related to fitness worksheets, which is a common tactic for phishing or malware delivery. The embedded URL is the primary indicator of a malicious redirection or download attempt.

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/wix?keyword=body+beast+cardio+worksheet
- https://cdn-cms.f-static.net/uploads/4500893/normal_601a2b44a5fc0.pdf
- https://cdn-cms.f-static.net/uploads/4444853/normal_60118bb146677.pdf
- https://cdn.sqhk.co/kawurefeki/MqijT99/nituxujakopuwozid.pdf
- https://static.s123-cdn-static.com/uploads/4411686/normal_5fcd4244da5e2.pdf
- https://static.s123-cdn-static.com/uploads/4413566/normal_5fe1f5d582672.pdf
- https://cdn-cms.f-static.net/uploads/4454973/normal_6023a7d157c2a.pdf
- http://nuselobire.22web.org/22610357853.pdf
- http://wazerutumaj.22web.org/360_antivirus_scan_free.pdf
- https://static.s123-cdn-static.com/uploads/4415524/normal_5ff16cc88dc16.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://s3.amazonaws.com/risalenefazozo/canadian_maple_leaf_vector_free.pdf
- https://s3.amazonaws.com/vawoginele/alienware_laptop_gaming_performance.pdf
- https://s3.amazonaws.com/zatazewoz/66456551120.pdf
- http://zukizibukuxupir.epizy.com/70857086428.pdf
- https://s3.amazonaws.com/bojafazes/whats_the_difference_between_charger_rt_and_rt_plus.pdf
- https://s3.amazonaws.com/veledabejufi/ayatul_kursi_video_3gp.pdf
- http://filopatoj.rf.gd/bd_live_tv_apk.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_off0000de99.bin` `a73415310c0f12c36c7c1a67f5ddd4260b317dda1e7fc267e0e6fb4c8c318180`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE99	5124 bytes
`font_01_sfnt_off0000f02e.bin` `ba11346d7af4a931447b55a83036f4fa7c24b601971330982021a314219c15fe`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF02E	10328 bytes
`font_02_sfnt_off00011383.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11383	4324 bytes

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