Malicious PDF — malware analysis report

Static analysis result for SHA-256 592dfb8542f89b64…

MALICIOUS

PDF

84.3 KB Created: 2021-04-01 04:12:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: a0f4d3b3f19a0bc8f8b12f9e0024040d SHA-1: e449fde87c4eae2887d4d9205d8962a917773270 SHA-256: 592dfb8542f89b645f21d5c5870a743cb7c85d5b00e5c5cea730c891736af16b
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing campaign. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to malicious sites for further exploitation or credential harvesting. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://xajibur.ru/strik?utm_term=what+are+the+three+levels+of+health+prevention PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465685/normal_601081aaad987.pdfIn PDF document text
    • https://nedugapepo.weebly.com/uploads/1/3/4/2/134265444/939323f828a32f9.pdfIn PDF document text
    • https://cdn.sqhk.co/kapapomabu/4hhgfQY/fall_premiere_dates_for_tv_shows.pdfIn PDF document text
    • https://cdn.sqhk.co/navolakolire/0gjgdjc/audio_recording_app_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/turovonunido/dghjDia/lapse_a_forgotten_future_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/temisexezoda/m2jegho/monster_hunter_rise_release_date_pc.pdfIn PDF document text
    • https://nujusokomofevak.weebly.com/uploads/1/3/4/5/134503883/d33532.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368486/normal_600922d8d8464.pdfIn PDF document text
    • http://sks-expertiza.ru/catalogue_yvert_tellier_gratuitnyw5o.pdfIn PDF document text
    • https://vobawele.weebly.com/uploads/1/3/5/3/135334277/5efdb74bdc7.pdfIn PDF document text
    • https://tokarakuwo.weebly.com/uploads/1/3/0/9/130969339/sesisitar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467306/normal_605f857460e8d.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/ifhhcji/63530828063.pdfIn PDF document text
    • http://lovechat24.club/scout_oath_and_law_philippines_tagalog1lxun.pdfIn PDF document text
    • https://woxazalaxit.weebly.com/uploads/1/3/4/2/134235403/vugin_jitano.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/f3o8ijT/entergy_arkansas_outage_phone_number.pdfIn PDF document text
    • http://biolinkus.me/835311345681qo2b.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/Pgihfgg/24645753904.pdfIn PDF document text
    • https://cdn.sqhk.co/rowubuvuke/ichjtkH/wovatezofopowe.pdfIn PDF document text
    • https://cdn.sqhk.co/patagarinixa/jfrW0Jr/amazon_delivery_driver_uniform.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462732/normal_6043163d3990b.pdfIn PDF document text
    • http://vehicleinsusa.com/how_to_use_pivot_point_in_intraday_trading_in_hindigmpdp.pdfIn PDF document text
    • https://cdn.sqhk.co/busumodofu/djiijie/6356332672.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://b6086c54-8ef4-40f3-ba18-bbbb993b339e.filesusr.com/ugd/36e927_ce28a7e785a248968396eaf8bb296422.pdf?index=trueIn PDF document text
    • https://f770b3d7-c897-40e0-9323-5ad0abd91552.filesusr.com/ugd/1fa6dd_ecaf2eeff2ee4ae88872a000f5170267.pdf?index=trueIn 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.

FilenameKindSourceSize
font_00_sfnt_off0000fbad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAD 4852 bytes
SHA-256: c67c3b1b711a9e40fcbe0ffdd522a525b8efc20567e45850477be142c1f56bf0
font_01_sfnt_off00010c2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C2C 12448 bytes
SHA-256: c336021b083e3797538158ca449a70b234a2c7da1cf85701afdc097bc13258a7
font_02_sfnt_off000134a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134A3 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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