Malicious PDF — malware analysis report

Static analysis result for SHA-256 006b21811e073712…

MALICIOUS

PDF

86.5 KB Created: 2021-07-22 03:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7293a4ef56fdd02ef523f98f675685af SHA-1: 1fe0620230efebe82e485a2b040a145cbf5337b3 SHA-256: 006b21811e073712bfb7f8341167c1781da92eeb89626803f8d15bb7a83f95d1
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis to the URL structure and heuristic findings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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 http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609f74f8da848---67428623641.pdf
    • http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/93327913249.pdf
    • https://cvconstructionsgoa.com/pharma/admin/userfiles/file/67325737341.pdf
    • http://morethancars.nl/uploads/edytor/file/mufakoxu.pdf
    • https://tramtron.vn/uploads/files/files/fazafefetaluvamobamuxaror.pdf
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/2870ede6e3ef65ec1f8dfea3f17aaaa1/30629773336.pdf
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a8cb5790b0---kemisulavilatafegafu.pdf
    • http://aviatechinform.ru/sadm_files/pobinekotafi.pdf
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/ecf3d37f0cd18cf9bc4614054ca6cf23/62500277328.pdf
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/135292dfed993aa6fe254b8485f423a0/26589274001.pdf
    • http://jrjohnsonfamilyreunion.com/clients/0/09/090f04f22b165063c0e57546eb93b169/File/70071450632.pdf
    • http://antansconstructions.com/ckfinder/userfiles/files/virefajimozufizuseguw.pdf
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/9eff71faf436495ad88eceeb2f3d9f08/82871590254.pdf
    • https://sanipacific.com/attachment/file/kiterivaxekepopotaluruli.pdf
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/6880388a5c5f64e77a73f4d5d1f48164/jexijanukajoba.pdf
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd1c0bbc18---99506516622.pdf
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a921aaa2266---garix.pdf
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec58099ee6---neravisefudojujalilawiju.pdf
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b53d159b68b---12471027131.pdf
    • https://monuments-msk.ru/wp-content/plugins/super-forms/uploads/php/files/70a35c11f9ee05ccfabc3a08600273fe/79313714413.pdf
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/4cc2d378052e7908c37e70c04d8140d6/88086455642.pdf
    • http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/70f696819d1fa8d2a1d729da05bde56f/zaxineduruf.pdf
    • http://alexlunacoach.com/img/editor/file/7975865054.pdf
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/zidefapunelozedufosogab.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=thermoelectric+thermometer+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_off0000ece6.bin
75d1eb1ef34ef1c7605c3a91b275d04637aa2e735dbfe5c4ed2be351182b826b
pdf-font-stream PDF embedded font (sfnt) at offset 0xECE6 17792 bytes
font_01_sfnt_off00011bc8.bin
15022900685ec9e732f87b04fa06df7980dcd4cb5e6255dbda7604e4b008ba4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x11BC8 10412 bytes
font_02_sfnt_off00013352.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13352 16792 bytes