Malicious PDF — malware analysis report

Static analysis result for SHA-256 02465f06b9f8b20c…

MALICIOUS

PDF

91.6 KB Created: 2021-08-04 14:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 79aa1d18f730b6da8cf69633dc191990 SHA-1: 671ab53d6589a9be4af6d4fba84b52461e194196 SHA-256: 02465f06b9f8b20cb25389b678d67f3ecb905a2330afad32e482343d5623fc15
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to external sites, many of which are hosted on compromised CMS platforms. This suggests a phishing or scamming operation designed to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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://beautyyaurient.com/editor_upload/file/mipigabiwo.pdf
    • http://polyalpan.hu/_user/file/13114683.pdf
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/5d3rier7ohtfn6psr8thfmg02h/88825271746.pdf
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/84v81h5jj2e3mgvp588a7gjl1c/xupuv.pdf
    • https://cuisinescartier.ca/upload/editor/file/ziwuvunakodefifukavina.pdf
    • https://medtek.vn/storage/file/96351550248.pdf
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/5919eff9f8de4fe41f3658422e030173/lukawebaraw.pdf
    • http://hoshitorionline.com/uploads/files/viwirezodojomavuk.pdf
    • http://broadgatecapital.com/userfiles/file/12048713246.pdf
    • http://e-sportis.com/images/upload/sewefenemetomuz.pdf
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160721a15ed4a1---sovegiki.pdf
    • http://csc010.com/userfiles/file/20210628163440_13glck.pdf
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1606f363fb7958---43522961710.pdf
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bbfe5106657---povonabipamutunu.pdf
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc46187fd8---texolamigebuwanuj.pdf
    • http://slsnn.ru/content/files/sadiwukasopuvuvufopi.pdf
    • http://www.deco-interieure.com/userfiles/file/4957483446.pdf
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/k2mus6hjtj8jsalmhu5ihe3rv4/71442180008.pdf
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/a4820627325e8f19380092162c09462e/rekagug.pdf
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1608bee15ebf3f---zorugetoxitaz.pdf
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609df2a9191ac---wafumipedusirizidatek.pdf
    • https://jhservice.net/imagenes/galeria/files/lamanogevoboduduvi.pdf
    • http://poongdung.com/FileData/ckfinder/files/20210628_BABFB79FD219F93E.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=does+crunchyroll+have+naruto+shippuden+english
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f585.bin
1a81f0f62c14bc04ea08a64d2224bd3b44ffeafaeb65ae19d1f65a01dbaedaec
pdf-font-stream PDF embedded font (sfnt) at offset 0xF585 17496 bytes
font_01_sfnt_off000123a3.bin
e43a30c2a52aa8e7a9176622e59506b5e5fef28cd90d111364431a390d485af3
pdf-font-stream PDF embedded font (sfnt) at offset 0x123A3 2428 bytes
font_02_sfnt_off00012e51.bin
c2152906b1cc1f150e44076202fe0a73927a88b49e8a76c0a59e9942e36220ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x12E51 11076 bytes
font_03_sfnt_off000147e2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x147E2 16792 bytes