PDF malware analysis — malicious · 2863575cc59448c9

MALICIOUS

PDF

86.0 KB Created: 2021-02-03 03:12:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 1212c011f91e1457cffc95439d550613 SHA-1: 53088c6828b56d353ec3b9edac740dbe36d7e50e SHA-256: 2863575cc59448c9a5a1b799f8607e220cd99f1aae2c6830ccf09d139c00d2d2

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to disposable hosting, indicative of a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and link farm heuristic point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/aws?utm_term=beethoven+symphony+9+violin+sheet+music PDF link annotation
- https://cdn.sqhk.co/xogatijixe/7jgFPQF/27220534059.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465537/normal_6017d06d0c2fc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389823/normal_6010325879e4f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454430/normal_5fd63ec14e536.pdfIn PDF document text
- https://barobinamad.weebly.com/uploads/1/3/4/7/134756413/jetobexobume_bixonejusexu_kinopirisipaw.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4471109/normal_5fec0796dc300.pdfIn PDF document text
- https://cdn.sqhk.co/nomazotesi/jdUjbgj/push_and_pop_in_python_3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454289/normal_5fe91d0f2d796.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4393018/normal_5ff782f170c4a.pdfIn PDF document text
- https://cdn.sqhk.co/putizimetiwe/hZgc3E5/red_yellow_and_green_vertical_stripe_flag.pdfIn PDF document text
- https://tesegape.weebly.com/uploads/1/3/5/3/135387632/a9dbae7.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://zekakodususebu.epizy.com/girazepufona.pdfIn PDF document text
- https://s3.amazonaws.com/tipikaxe/electroconvulsive_therapy_guidelines_canada.pdfIn PDF document text
- https://s3.amazonaws.com/tipikaxe/award_template_google_slides.pdfIn PDF document text
- http://vupileloluxus.rf.gd/quadratische_funktionen_lsen_mit_pq-_formel.pdfIn PDF document text
- http://dejogamolefip.rf.gd/54916091661.pdfIn PDF document text
- https://s3.amazonaws.com/gozifep/nabalubaru.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ece7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xECE7	5232 bytes
SHA-256: `e537a0badfd0a9efe58a623e201a291f4d53014312f73fc1d9f2260f82e4c161`
`font_01_sfnt_off0000fe9f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE9F	2060 bytes
SHA-256: `efda9760780256ac9b4358d36efb720cd52d232891923eea7fd69b9b485919bf`
`font_02_sfnt_off00010848.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10848	13508 bytes
SHA-256: `a215404bf55d06b08accb36af3bea6b5400f55c2835f79a060c83f67bc889d7a`
`font_03_sfnt_off00013295.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13295	16232 bytes
SHA-256: `ded19b8224b240d0b71857fcff6d758cbeec74f435df92366a86e51fb8b1c043`

Open this report in the interactive analyzer, or submit your own file for analysis.