Malicious PDF — malware analysis report

Static analysis result for SHA-256 060c2d428dc47d60…

MALICIOUS

PDF

71.7 KB Created: 2021-09-25 05:01:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f2070e33130ce25ec406642faa7bfa0a SHA-1: eb3141688ae890412524d13bcdb72cbcdb02a4ca SHA-256: 060c2d428dc47d607c7485afffc3ff5c85349f895bbaf8e3453bef34f8b034b1
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by a machine learning classifier and ClamAV. It contains a large number of embedded URLs, many pointing to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of 'utm_term' parameters in some URLs indicates a potential phishing or SEO manipulation attempt. No scripts were extracted, but the overall structure and URL distribution strongly suggest a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://crysiq.ru/uplcv?utm_term=hidden+settings+for+miui+app
    • http://ahjygjg.com/upload_fck/file/2021-9-4/20210904021951166797.pdf
    • http://risorsaterra.it/userfiles/files/kozevifesapujixaf.pdf
    • https://slotpt2.com/contents/files/89988776538.pdf
    • https://turismopontevedra.com/ckfinder/userfiles/files/junelewesizigof.pdf
    • http://bienbao.org/uploads/files/86096434007.pdf
    • http://cansuyu.org/resimler/files/11552776697.pdf
    • http://flyingkirin.com/uploadfiles/file/111450337824.pdf
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16143c394390bf---18659445043.pdf
    • http://unseretochter.ch/images/file/61424975343.pdf
    • https://e-motorcycle.tw/upload/emotorcycle/files/26760271934.pdf
    • https://xn--80aesyq.xn--p1ai/files/file/vupaxategax.pdf
    • http://travelshops.pl/userfiles/file/3105595299.pdf
    • http://dakdekkersindex.nl/images/uploads/tifafop.pdf
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/161464441cc7af---50882485977.pdf
    • http://bibikid.ru/upload/1511723820.pdf
    • http://seosanhrd.com/userfiles/file/makotuwarapesubi.pdf
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e654ed6f64---xozemezogupita.pdf
    • http://opgzvh.hr/upload/file/gobusinebawidetusipofumax.pdf
    • http://olapromos.com/ola/uploads/editorImagesfiles/lujetunolotalivevoja.pdf
    • http://olivetheater.com/userData/board/file/fufuvimebiwasexujo.pdf
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613229e36cc2e---92062965910.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://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_off0000afee.bin
b3acc0199bafe059ed43c19627394785d763c4607be90f3d64b921d9ee3ea353		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFEE 18872 bytes
font_01_sfnt_off0000e09a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE09A 16792 bytes
font_02_sfnt_off0000f8b1.bin
45f7aefcb1d921745088b69f91041bf1d7d378bd8907b7e0429c115cc3ab5fa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B1 10884 bytes

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