Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab19018d0542817…

MALICIOUS

PDF

70.3 KB Created: 2021-01-24 23:56:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 171c7efa0d46033ce9ca09d8c7f4e589 SHA-1: 899c30f4a8e36895209a2c371c71d6649c0e30a5 SHA-256: 7ab19018d0542817aa3f190501f0fadabe82dde7daa80f6c298bcf0edd31c490
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified by the 'PDF_SEO_LINK_FARM' heuristic, directing users to various websites, some of which are suspicious. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to statistics, aligning with the external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://traffset.ru/123?utm_term=discovering+statistics+using+ibm+spss+statistics+north+american+edition+5th+edition PDF link annotation
    • https://cdn.sqhk.co/febutatesu/gd3O7jh/national_corvette_museum_sinkhole_cars.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/gggIqc0/gugetututaxezafutije.pdfIn PDF document text
    • http://poradoit2.site/86077467492cycw7.pdfIn PDF document text
    • https://fotavimapuwe.weebly.com/uploads/1/3/2/8/132816041/2aff4.pdfIn PDF document text
    • http://xexogafuko.22web.org/hooked_inc_strategy_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/tevosenijosu/jgrheif/wizarding_world_of_harry_potter_london_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/jaselavujuwi/ydLsgi4/american_metals_market_scrap_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/lidojuxuxiro/jgegfic/1694604551.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/IKNJmgg/90883490692.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/mosezavor/1302163372.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/92433749809.pdfIn PDF document text
    • http://kazaxese.epizy.com/batman_dark_knight_rises_for_android.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A6 5780 bytes
SHA-256: 7d614390b85b803b72665468ae5c42a0628dc18f9d5a8d5c87668595dbb107d1
font_01_sfnt_off0000e731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE731 10612 bytes
SHA-256: 46c964bb0a6921eeb0fb036e86e132b73a5d0aa3f229f3a166be0237f85c203c

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