PDF malware analysis — malicious · faa18d0868572df4

MALICIOUS

PDF

78.9 KB Created: 2021-02-20 14:51:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25

MD5: cb1df3cdebc44fd781b9dea5b83575c7 SHA-1: 2931ff1456ce27a348df714e785c04928b7a58db SHA-256: faa18d0868572df4a779c87655ad977b076318228e911e75279e3bb40ef6c40a

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a deceptive lure related to stock market performance, designed to trick users into clicking a link. This link redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document also functions as a link farm, distributing numerous links to potentially malicious or disposable hosting sites, further supporting its malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

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 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.
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://yafferge.ru/strik?utm_term=what+did+the+new+york+stock+exchange+close+today In PDF document text
- http://respect-ltd.su/mini_borescope_for_androidjzw3i.pdfIn PDF document text
- https://dubibezu.weebly.com/uploads/1/3/1/4/131453247/62b4b5506e1af.pdfIn PDF document text
- http://rubeatyshop.xyz/trauma_de_torax_penetranted68p7.pdfIn PDF document text
- https://xokefinodoju.weebly.com/uploads/1/3/5/3/135316617/b58e0fe07.pdfIn PDF document text
- https://velineninebag.weebly.com/uploads/1/3/4/6/134608195/9970736.pdfIn PDF document text
- https://cdn.sqhk.co/banamasuvaj/d7jjp2C/best_iq_test_for_autistic_child.pdfIn PDF document text
- https://cdn.sqhk.co/wugunifikezu/ijiigic/15930054028.pdfIn PDF document text
- https://cdn.sqhk.co/pofadugilip/fNVXljg/nulonugovonava.pdfIn PDF document text
- http://richmaya.site/a_night_to_remember_book_reading_level5z4h2.pdfIn PDF document text
- https://cdn.sqhk.co/gufezitaxato/9hdoPia/60731516412.pdfIn PDF document text
- https://cdn.sqhk.co/xefijumu/fqhcImb/kusof.pdfIn PDF document text
- https://cdn.sqhk.co/zirimikuj/qtijgec/toilet_sound_running_water.pdfIn PDF document text
- https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/8578447.pdfIn PDF document text
- https://cdn.sqhk.co/sojowidaz/wSieh8B/pacman_xon_full_screen_game.pdfIn PDF document text
- https://cdn.sqhk.co/mujejadalale/jCfianT/road_to_valor_world_war_ii_wiki.pdfIn PDF document text
- https://tekudijasefemo.weebly.com/uploads/1/3/2/7/132740256/mixotemib.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/lebejos/arcade_games_retropie.pdfIn PDF document text
- https://s3.amazonaws.com/bajapovogam/speed_and_acceleration_calculations_worksheet_answers.pdfIn PDF document text
- https://s3.amazonaws.com/zuniverijesud/confluence_jira_sprint_report.pdfIn PDF document text
- https://s3.amazonaws.com/gowupuzokowuxes/71791356077.pdfIn PDF document text
- https://s3.amazonaws.com/limewub/panonubolaforobobutuvid.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e75a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE75A	5328 bytes
SHA-256: `d81146ad098e351ac91fe11175cf385eaa9cb16d98b558df466e3b236854a7cc`
`font_01_sfnt_off0000f989.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF989	11180 bytes
SHA-256: `3d75622598574c54d65c5b9e24e8cdef40e3866f871c25f5c7fe8b0ad1f3fac2`
`font_02_sfnt_off00011f92.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F92	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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