PDF malware analysis — malicious · 1c864cb6c64a68f5

MALICIOUS

PDF

76.3 KB Created: 2021-02-23 03:03:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 04771201a9daa3ffdb3011a8432c3211 SHA-1: a8fede869ab987324272c6bd7c55af9d01597017 SHA-256: 1c864cb6c64a68f5b9b765e7350e6eb35c10feb8d9162cf2f20913de5c838c48

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, many of which are hosted on disposable domains or use UTM parameters, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains references to 'Night owl 720p hd video security dvr', which appears to be a lure to direct users to malicious URLs.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

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/strik?utm_term=night+owl+720p+hd+video+security+dvr PDF link annotation
- https://cdn.sqhk.co/sinemajud/yNxghwR/comedy_central_apple_tv_uk.pdfIn PDF document text
- https://cdn.sqhk.co/sewujuzanas/rjfCJOc/ant_colony_starter_kit.pdfIn PDF document text
- https://cdn.sqhk.co/fogobewataja/hffjgih/17375280800.pdfIn PDF document text
- https://welafunugor.weebly.com/uploads/1/3/5/3/135327357/sununozi_vizes_fimoxame_wenikibebamat.pdfIn PDF document text
- https://cdn.sqhk.co/kinanunir/fJC3hbm/donkey_kong_game_boy_color_rom_download.pdfIn PDF document text
- http://ccckkkkk.space/chick-fil-a_1001_blythe_blvd_charlotte_ncglsbi.pdfIn PDF document text
- http://carins.info/welsh_government_food_and_nutrition_guidelinesay2v6.pdfIn PDF document text
- https://cdn.sqhk.co/zuzikewed/jarAifh/poputizunowilijix.pdfIn PDF document text
- https://cdn.sqhk.co/wogokodu/iihCiW5/tamil_new_trending_whatsapp_status_video_download_sharechat.pdfIn PDF document text
- https://cdn.sqhk.co/satofapo/eTidic1/hit_the_roof_tiktok_dance.pdfIn PDF document text
- https://cdn.sqhk.co/rolileduvof/auLjggg/25178363950.pdfIn PDF document text
- https://cdn.sqhk.co/lebudawojafi/avgcia2/xuvitomulifirosok.pdfIn PDF document text
- https://xavitutasufeja.weebly.com/uploads/1/3/4/6/134669981/mikideb.pdfIn PDF document text
- https://cdn.sqhk.co/xenivoronizu/gd9hdhd/cooking_tycoon_game_apk.pdfIn PDF document text
- https://cdn.sqhk.co/nejisakatok/bCDdYgg/bifugosegatexudapaneva.pdfIn PDF document text
- https://cdn.sqhk.co/miraroki/edTgjhi/newebipunufimusisotunowow.pdfIn PDF document text
- https://pumagawiluzade.weebly.com/uploads/1/3/4/6/134697536/9368601.pdfIn PDF document text
- https://vimijalubatek.weebly.com/uploads/1/3/4/7/134739875/b9496eae.pdfIn PDF document text
- http://alternativeinfluencenetwork.net/6552800063kzca7.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/kefiperizonofu/1039677863.pdfIn PDF document text
- https://s3.amazonaws.com/fatisake/62627710308.pdfIn PDF document text
- https://s3.amazonaws.com/mixanaz/30348723362.pdfIn PDF document text
- https://s3.amazonaws.com/legipalofi/surrealista_definicion.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_off0000eb78.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB78	5704 bytes
SHA-256: `61d196156bcd063d810717fe2f2bad5353589385f96f9a88d27d288fcf7521b7`
`font_01_sfnt_off0000ff17.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF17	10668 bytes
SHA-256: `242bc17e16693577095f794e6d543ca0a243c72c9c27cfbf6518a8be4aded922`

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