PDF malware analysis — malicious · 7c929ba8d7de606a

MALICIOUS

PDF

66.5 KB Created: 2021-02-16 23:47:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22

MD5: ae88aa6b611f58e7492b269f117381c9 SHA-1: 2b9d3f6da2a18c62ffbad2019cdab988b8a80895 SHA-256: 7c929ba8d7de606a8e726d2ace2cfd9f0aa8049b1cbfd940d8b8bd27c33f7b10

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.8617

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://yafferge.ru/strik?utm_term=black+and+decker+electric+edger+le750+blade In PDF document text
- http://meetplafond.xyz/old_blood_stains_on_sheets2cqgo.pdfIn PDF document text
- https://cdn.sqhk.co/lepagesali/hjgjRGr/senior_world_easyfone.pdfIn PDF document text
- http://kuroramogesok.iblogger.org/94881391430.pdfIn PDF document text
- https://cdn.sqhk.co/vukupamita/djfPheq/farming_usa_2_unlimited_money_free_download.pdfIn PDF document text
- http://select-get.top/aceable_final_exam_answers_texas8g1vf.pdfIn PDF document text
- http://luchdobro.site/nomebegitifufofewefamubap5vk1.pdfIn PDF document text
- http://opticsystem.website/legendary_warriors_game2r21f.pdfIn PDF document text
- http://taxutipepavij.iblogger.org/bikini_bottom_genetics_incomplete_dominance_answer_sheet.pdfIn PDF document text
- http://jirafka.space/change_data_capture_in_informatica_powercenter3jvqk.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://purubonosarule.rf.gd/bupixawuwefotenenuw.pdfIn PDF document text
- https://s3.amazonaws.com/tixeligufokup/dodafaga.pdfIn PDF document text
- http://fuvezijejek.epizy.com/bal_ganesh_movie_songs.pdfIn PDF document text
- https://s3.amazonaws.com/zerejibixupav/18083701835.pdfIn PDF document text
- https://s3.amazonaws.com/kegubinefuda/blank_digital_clock_face_template.pdfIn 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_off0000da7b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA7B	5528 bytes
SHA-256: `765575eb14510e48f5a784afa16b9905acadaa915b432b07ed7b5ba7413b828d`
`font_01_sfnt_off0000ed64.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED64	10632 bytes
SHA-256: `6ad8b4303143fd00e0a2edebb30f7c782791be38869f1fe02c27bf1bfb06ad64`

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