PDF malware analysis — malicious · 5c0ce7c125ded98a

MALICIOUS

PDF

111.5 KB Created: 2021-03-24 03:25:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13

MD5: bcea866979072ba1705c64561fce8925 SHA-1: 57f7f28e8cdc3896e95cd307502231350b4781d1 SHA-256: 5c0ce7c125ded98ac1a8bb817ed924e03ccb378ffddd65ce04d00b866b664185

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document's content and structure strongly suggest it's part of a phishing campaign, likely using a search result lure to drive traffic to compromised or malicious websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 6

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 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.
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://jacksth.ru/strik?utm_term=warhammer+40k+space+marines+codex+8th+edition+pdf PDF link annotation
- https://duxawedi.weebly.com/uploads/1/3/4/4/134477895/vukafapiga_kaxowusugopi_jomagi_zedirijejej.pdfIn PDF document text
- http://zipubezexupoka.mywebcommunity.org/does_the_star_of_bethlehem_still_shine_today.pdfIn PDF document text
- https://fopabitibomasad.weebly.com/uploads/1/3/1/8/131857723/lifafibixuro_sireb_xidenufizuga_joturodevez.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479236/normal_605a732354bc9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4425933/normal_60137c9707067.pdfIn PDF document text
- https://funavekun.weebly.com/uploads/1/3/0/9/130969801/nareru.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413975/normal_5fd233663a0fd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4418385/normal_5fd32d0485640.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465924/normal_5fe9b1760d9e7.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4445564/normal_5fc81bf1ec979.pdfIn PDF document text
- http://lapuxuzogu.22web.org/73022118002.pdfIn PDF document text
- https://buwuwewofopalun.weebly.com/uploads/1/3/4/0/134097592/zoxefakutad.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4483870/normal_5ffba10e9cc28.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479435/normal_5fd0ed84b7350.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4463824/normal_604d0a3d5d8d4.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/jevopemosod/pufuv.pdfIn PDF document text
- https://s3.amazonaws.com/boxujetanonikuv/doom_2_abandonware.pdfIn PDF document text
- http://zipemoluligera.myartsonline.com/roruberutisesanevube.pdfIn PDF document text
- https://s3.amazonaws.com/muwomapotumugi/bootstrap_form_error_css.pdfIn PDF document text
- https://s3.amazonaws.com/mesotodimus/87739821687.pdfIn PDF document text
- https://s3.amazonaws.com/tosego/sepivagizijijibumuket.pdfIn PDF document text
- http://zalezir.epizy.com/77431538868.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_off00017428.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x17428	5932 bytes
SHA-256: `9e9f2de8384eaef783c6e1317c11c57125fcb590e35e9b58e2650a862e8500c6`
`font_01_sfnt_off00018843.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x18843	11464 bytes
SHA-256: `79926b6d054bd8e8c7285c9ed0ff4e4f19fe8fdc7fcb9f2a576a1349275cd101`

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