PDF malware analysis — malicious · 22e1a8eb931464f4

MALICIOUS

PDF

74.1 KB Created: 2021-02-18 00:40:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 4107f126320a1d7ddad13b1869b949a9 SHA-1: 9e73f4e639e44847d592a504da6445d70e63ab87 SHA-256: 22e1a8eb931464f45caf5a75f2a6e8f8c474dfab76e852ec887f7f968a3ccf6b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of multiple external URLs suggests an attempt to redirect the user to malicious sites or download further payloads. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution scheme.

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://crophysi.ru/strik?utm_term=the+history+of+sexuality+sourcebook+pdf PDF link annotation
- http://shoop-fn.ru/tom_kleijn_jeanne_schoutenz7xds.pdfIn PDF document text
- https://cdn.sqhk.co/jebuxanit/pggc5hd/puxurijigizaliwanekule.pdfIn PDF document text
- http://d-youtube.com/sonny_perdue_department_of_agricultureq12tn.pdfIn PDF document text
- https://cdn.sqhk.co/miweguzeg/iicKHje/80s_music_hits_classic_rock.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383579/normal_5fd2e9ec6cde1.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4466657/normal_5fcc382ac32e0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4419828/normal_5fc93df4385cd.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4485149/normal_5ff1463834366.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4443326/normal_600d8c1d94c86.pdfIn PDF document text
- http://bonus332.site/pawaradiwijuzscbt3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383800/normal_602c7e1203c0e.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e532.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE532	5564 bytes
SHA-256: `03885f9436a664ef6c9cfb289ff027cf24976c1d329bc0e2761b5b9656fa46f8`
`font_01_sfnt_off0000f81a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF81A	10640 bytes
SHA-256: `49ecd668817f38eea3f75cb9492e1dd0a5da2c369ab4d22ec7b32fdbf505515e`

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