PDF malware analysis — malicious · 80e62e9d123190d3

MALICIOUS

PDF

80.7 KB Created: 2020-12-24 22:05:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fd9195b498c2e0ff5d0d1d4c958d0163 SHA-1: 8152ae3ce5ec49afb296d8bdcc61f13e8fb6e4b3 SHA-256: 80e62e9d123190d3598439088ff355047f8147db062ab796a8e88aa6c4f8fa0a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified as a link farm, suggesting a phishing or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document, likely delivered via spearphishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://trafffi.ru/strik?utm_term=space+shuttle+mission+simulator+sts-+26
- https://cdn.sqhk.co/lanasido/gf2Ehha/dozip.pdf
- https://xirovule.weebly.com/uploads/1/3/4/7/134749068/3d6a48113c1b.pdf
- https://rewodudifizaba.weebly.com/uploads/1/3/4/4/134475466/2500597.pdf
- https://cdn-cms.f-static.net/uploads/4367017/normal_5f8a456d08e8d.pdf
- https://dadomirizetuso.weebly.com/uploads/1/3/4/8/134870225/fuvef_senof_libofetufapu_loberexexonatok.pdf
- https://cdn.sqhk.co/ribovonubod/jbIq5hd/9066518353.pdf
- https://cdn.sqhk.co/pupevadojas/ojdRvjj/2593834335.pdf
- https://cdn-cms.f-static.net/uploads/4368752/normal_5f8ac7460a680.pdf
- https://pemesekisubabas.weebly.com/uploads/1/3/4/6/134659876/lorud-gifafifok-puzitidasegonox-karag.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/popagexexoza/sutujixowifokiwutik.pdf
- https://s3.amazonaws.com/fogibi/dorevo.pdf
- https://s3.amazonaws.com/xezonijida/44744619357.pdf
- https://s3.amazonaws.com/wekibik/wawamugilal.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_off0000ffe4.bin` `6f01920d82f0c324d4e37f357939734f89eb8139db068a5b0149490a70e12399`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFE4	5592 bytes
`font_01_sfnt_off000112c2.bin` `d9cd9d0234c3bd47af650ba95b1fd4d644ec28c86c7c27c73a644db9a19e06c2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x112C2	10192 bytes

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