Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eeb5c70dfd981d4…

MALICIOUS

PDF

90.3 KB Created: 2021-09-01 15:32:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d3c4cf95ca047cd533d2ffcd40f7ea47 SHA-1: e5d091aeac8c2fdc23b51a135cf4a46566ff16bc SHA-256: 2eeb5c70dfd981d4af0e591dffe5da2084544d7df95970ee335e7c0c60d6f557
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The presence of external URI links and link farm characteristics indicates an attempt to redirect users to malicious content.

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
  • 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.
  • 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=the+show+must+go+on+by+queen+lyrics
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/etg1befufhb62vti5setahc5b1/ponetodonokezirazem.pdf
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bec1e6bd88---runavamu.pdf
    • https://zohopinler.com/calisma2/files/uploads/jizumetivekuxaduvomunen.pdf
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f5ffa5b63d1---wapif.pdf
    • https://argentinaproduct.com/ckfinder/userfiles/files/10099913693.pdf
    • https://falconshipping-uae.com/userfiles/files/42021674313.pdf
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6517aea90---83343800847.pdf
    • http://divapharma.com/uploaded/file/32241996139.pdf
    • https://ncvpte.in/userfiles/file/45653653595.pdf
    • https://jaiminsales.com/ckfinder/userfiles/files/razisigararogabemavilo.pdf
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a285401a02d---21535788078.pdf
    • http://jtylek.pl/Upload/file/vudunez.pdf
    • https://apgr.eu/UserFiles/file/70530666646.pdf
    • https://vntdc.com/upload/fck/file/70797314610.pdf
    • http://www.awakohchang.com/image/upload/File/uvavurub.pdf
    • http://moyamoya.center/images/hand_uploaded/files/17573430095.pdf
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/fc7h7gfp6jln73uh7639iq9f5e/vadapodisofinulefokuromis.pdf
    • https://pensiuneavalentina.ro/app/webroot/file/nupijojagev.pdf
    • http://ty-universe.com/image/files/20210603_183122.pdf
    • http://kargo-box.com/uploads/files/fulodotalasubiti.pdf
    • http://podiummoda.ru/userfiles/file/61252204389.pdf
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa0da90b68---samejavemetaziveba.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_off0000f768.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF768 16792 bytes
font_01_sfnt_off00010f7a.bin
f5ead15fb6498c1064067ee2305516b3e68f9d10988408277a6361389b687fdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F7A 19140 bytes
font_02_sfnt_off00014195.bin
e1ec4b383872012bcddd492e85763e7e6d5d7a4ae79a80b8d2693c591833de46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14195 11064 bytes

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