PDF malware analysis — malicious · 10296965d9b44dc4

MALICIOUS

PDF

74.2 KB Created: 2021-04-28 23:40:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: cdf62345d93db4966ab78105a61fbb15 SHA-1: b25fcef9fe4712e03d804ec660e5a7e5b4ff8c3e SHA-256: 10296965d9b44dc45d8b814d6464e1c7568a4e359ca968c133b2879b795d1363

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to 'zajinet.ru', which is flagged as a potential phishing or malware distribution domain. The document body, though heavily obfuscated, contains text related to search queries, suggesting a lure to trick users into visiting the malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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://zajinet.ru/strik?utm_term=how+much+is+a+thermal+fuse+for+a+samsung+dryer
- http://tinewipikawulu.iblogger.org/gemuxunomekex.pdf
- https://cdn-cms.f-static.net/uploads/4412388/normal_601bc38e5eb9c.pdf
- https://cdn-cms.f-static.net/uploads/4388617/normal_60445cb298574.pdf
- https://repositugi.weebly.com/uploads/1/3/0/7/130738607/mivonoxemuzisuligur.pdf
- https://paleforekirito.weebly.com/uploads/1/3/4/5/134579508/1604492.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/bupesejirijejus/dinokubakanakowovelare.pdf
- https://uploads.strikinglycdn.com/files/06f85f81-7664-43ce-8551-f65d6af0fe09/700r4_transmission_identification_codes.pdf
- https://s3.amazonaws.com/gonima/wrong_turn_3_movie_720p.pdf
- http://gajutar.onlinewebshop.net/editable_bingo_template.pdf
- https://s3.amazonaws.com/baxekojojexusol/61075511390.pdf
- http://pilomewolax.epizy.com/44061475432.pdf
- http://jifunujori.rf.gd/kuvevubonuxutenifutusaz.pdf
- http://zijedan.atwebpages.com/a1013_datasheet.pdf
- http://nulepavujuzafo.epizy.com/anchor_bolts_types.pdf
- https://uploads.strikinglycdn.com/files/c8760b6b-ac39-4b7e-ae86-717fd15c6f84/can_you_charge_an_ipod_shuffle_2nd_generation_without_dock.pdf
- http://soranodabiwegi.myartsonline.com/vegexoxeboted.pdf
- https://s3.amazonaws.com/polexebuj/58237613685.pdf
- http://robabunegulawi.rf.gd/the_brigands_of_rattlecreek.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_off0000e22d.bin` `4e0d8b591ae8491a913521d94325bdfbb716ba98404182d8a11e89a082053a76`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE22D	5592 bytes
`font_01_sfnt_off0000f51c.bin` `8e38367955fdc4a693b38a1b49077ebd32eb504a790586da4aa41ff4ec29ec39`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF51C	11448 bytes

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