Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60e5e3b94177f82…

MALICIOUS

PDF

86.3 KB Created: 2021-04-06 15:17:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ddfdb9e98dc26865f9f703af80faac78 SHA-1: 68e720e307f097508782f99a53ad5aa43eb488d0 SHA-256: c60e5e3b94177f82eb4bb97fd3e13eb91d32c02d9ee2bd89fb05dfac91cc6500
156 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 disguised as search results for popular content like movie downloads. This technique is commonly used to create link farms or to redirect users to malicious websites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/aws?utm_term=percy+jackson+series+movies+download+in+hindi
    • https://cdn.sqhk.co/bosamame/iehdXPk/76979301434.pdf
    • https://lewumirobubav.weebly.com/uploads/1/3/4/7/134762292/rokoberedozokax.pdf
    • https://cdn.sqhk.co/metumolalub/fLpsCQn/71742665775.pdf
    • https://pusudojajepi.weebly.com/uploads/1/3/5/3/135322366/9ab9b0492d.pdf
    • http://csxmoney.info/what_level_is_dork_diariesjdsua.pdf
    • https://cdn.sqhk.co/xarupozikala/vgjr7jj/bakexenow.pdf
    • http://baltika-trans.ru/59984775436cn0e7.pdf
    • https://cdn.sqhk.co/lupobikud/dDmjggf/nereganelibi.pdf
    • https://cdn.sqhk.co/wunemuruk/gefjbgi/at_t_watch_tv_premium_channels.pdf
    • https://zutijuxugovoxi.weebly.com/uploads/1/3/4/6/134684331/5dc16acf6817.pdf
    • https://cdn.sqhk.co/bazexolareja/ihUxfhb/95381537370.pdf
    • https://cdn.sqhk.co/gepibilis/JIjj2hg/84261131569.pdf
    • http://cadenalia.com/hallelujah_piano_sheet_music_originalc3nhb.pdf
    • https://cdn.sqhk.co/sevalaturi/g8Ribhc/samsung_music_apk_2020.pdf
    • http://lngcliente.com/dota_2_mid_guide_20191lp2f.pdf
    • http://0fruits.space/xuxonawanalaz3d1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nimuwet/facebook_cover_page_psd_template.pdf
    • https://s3.amazonaws.com/xetasif/how_to_play_fantasy_football_by_yourself.pdf
    • https://s3.amazonaws.com/fuzafuzeruwit/narasimha_naa_songs_com.pdf
    • https://s3.amazonaws.com/lepefi/sales_process_excellence.pdf
    • https://s3.amazonaws.com/vobuturinivi/bfa_cooking_level_up_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa99.bin
afb643d3f116bc9ab4182a2ff135e19cd713cd6f320a4c3babe7b082890127d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA99 5572 bytes
font_01_sfnt_off00010d81.bin
f1bab7e4ef82ee741ee1c0d7c9ce30845149f822a3487b47d866d8bfc23383bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D81 11632 bytes
font_02_sfnt_off0001355f.bin
c3d0ee408bee49a88931d2ac630a9fb52e88a46fabab5a72aa19e78bbe1d3826		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1355F 16376 bytes

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