PDF malware analysis — malicious · 6aee058931cefcc4

MALICIOUS

PDF

72.6 KB Created: 2021-03-02 13:43:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25

MD5: e713f598d5f4261b6e95904278fe4611 SHA-1: dd06842d6789ff26d85c5f56f94d53a4cf1f2ea4 SHA-256: 6aee058931cefcc45f01e2a7a552d73a3aa2c10d5b69a52c866e2840b4e0cc34

126 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://leonvi.ru/award?keyword=general+deterrence+theory+definition PDF link annotation
- https://cdn-cms.f-static.net/uploads/4377912/normal_6016193232566.pdfIn PDF document text
- http://aarbuz.space/930130374091rtrb.pdfIn PDF document text
- http://store50off.info/60846706148led5w.pdfIn PDF document text
- https://nitipitu.weebly.com/uploads/1/3/0/7/130775162/zasafanesaba.pdfIn PDF document text
- https://lezanixopedem.weebly.com/uploads/1/3/4/8/134886347/tisus.pdfIn PDF document text
- https://sizokagijabid.weebly.com/uploads/1/3/4/6/134652394/2656b.pdfIn PDF document text
- https://gigufeti.weebly.com/uploads/1/3/4/6/134633464/dupiletuxavilad.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4378157/normal_5fc57e62e5739.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/dogevazapiwediw/regunadisokiwadesituti.pdfIn PDF document text
- https://s3.amazonaws.com/sitozi/socomec_atys_p.pdfIn PDF document text
- https://s3.amazonaws.com/lovetijif/25140490002.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_off0000e1ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE1BA	5064 bytes
SHA-256: `6574eecc1ad728b20355b4598f6b1539a3c82abb3ccd35abacc143f342d904fe`
`font_01_sfnt_off0000f2f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2F8	10104 bytes
SHA-256: `6c80385f25431265680f6bc00e28e45fb4691f63a3fcbc2346516dd92e0fbf01`

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