PDF malware analysis — malicious · d0c57b4277754146

MALICIOUS

PDF

72.1 KB Created: 2021-01-13 13:28:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 239e201cd3b1bd3ba3540ef970f210ef SHA-1: fac06fae0e610030e16db7ee501df008cbd42ea7 SHA-256: d0c57b4277754146420135fadca786bca9b0b4820ad6d162c6320725abb9e662

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an embedded URI pointing to a suspicious URL, likely used to deliver a payload or conduct phishing. While no scripts were directly extracted, the PDF structure and embedded URIs suggest an attempt to exploit vulnerabilities or trick the user into navigating to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/wb?keyword=car%20running%20rough%20when%20cold PDF link annotation
- https://cdn.sqhk.co/novupezezis/nWibMjj/mit_university_admission_requirements_for_international_students.pdfIn PDF document text
- https://biteledazuxol.weebly.com/uploads/1/3/4/3/134315761/c72bfac505.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409614/normal_5fb83cb7d4821.pdfIn PDF document text
- https://cdn.sqhk.co/jesupasuzoku/41gghig/newabavin.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366340/normal_5fa2166683fe4.pdfIn PDF document text
- https://cdn.sqhk.co/sozasusu/jcidlii/fake_call_prank_mod_apk.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4422392/normal_5fc7c87f65ba6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417403/normal_5fdc4f2121886.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/gomaxod/xiwebufibokolikeduzebife.pdfIn PDF document text
- https://s3.amazonaws.com/magapeguwabe/club_flyer_templates_photoshop_free.pdfIn PDF document text
- https://s3.amazonaws.com/degisapemifa/bwv_1007_cello_sheet_music.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000df1b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF1B	5020 bytes
SHA-256: `99f39d184906e68c944e5d9bae245723066ff8300beb193246f132385df063c4`
`font_01_sfnt_off0000f035.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF035	10444 bytes
SHA-256: `2a8de7fa5ae21586239abb01e37e133e4d3a9467472d3453b55596d29e49839d`

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