Malicious PDF — malware analysis report

Static analysis result for SHA-256 12e3008619e81129…

MALICIOUS

PDF

89.7 KB Created: 2021-08-02 13:37:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 440da9f1e17b944822da11a96eb5bd0f SHA-1: 8055eed5073f8eaa16fd7b6afd781c5905a1bf15 SHA-256: 12e3008619e81129a440829869b8c1e0a0271b6edf06f23edca2cb3e6db5cfeb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious by ML and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to various compromised websites and disposable hosting domains, likely to deliver further malicious content. The embedded URLs, such as 'https://huntic.ru/uplcv?utm_term=minecraft+demo+no+download+just+play+free', are designed to exploit user interest in free software or games.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://huntic.ru/uplcv?utm_term=minecraft+demo+no+download+just+play+free PDF link annotation
    • http://nwatchonline.net/userfiles/file/8499856314.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/f8d5454e8d90dcc8b6b5b8c2e97c04bb/72193695235.pdfIn PDF document text
    • http://toeicspeaking.net/_UploadFile/Images/file/lekutejurijowejuxizuz.pdfIn PDF document text
    • http://pr-dienst.ch/file/33340963928.pdfIn PDF document text
    • http://co-wemart.com/careeruserfiles/file/1176282122.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160853d06814d2---kabagimedomakuwagomuz.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608954972070d---foxudisezanufozunav.pdfIn PDF document text
    • http://happypalettebnb.com/CKEdit/upload/files/lidivovobamefaf.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/512162e58aeabb0cfc2323ab14b5dff8/begununokukizitofupiz.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7710581eca---mavigezozegisolizudujol.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e57b1de36e3---93152445855.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607650056f460---90991004973.pdfIn PDF document text
    • http://camionespanamericana.com/userfiles/file/92034920596.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/oh4m40lilq4ekkbe2b8n0qa3hb/gumos.pdfIn PDF document text
    • http://cariboohose.com/userfiles/file/fujukufobonagulovikevowed.pdfIn PDF document text
    • http://iphysiology.ru/upload/41833258893.pdfIn PDF document text
    • http://xn----7sbab1bcaqplb0ccyi9d.xn--p1ai/files/file/potidifitivewufojiduxita.pdfIn PDF document text
    • http://qunjl.com/userfiles/files/dojujupoxosagirob.pdfIn PDF document text
    • http://bumsnab.ru/uploads/files/sipiwejarubexuxusufi.pdfIn PDF document text
    • http://altaprecision.com/userfiles/file/6662012777.pdfIn PDF document text
    • http://cn-junsheng.com/upload/file///20217813306525.pdfIn PDF document text
    • http://judyzscotties.com/clients/1/1f/1f1ef5c9f72ce0e5bea5babf356718c6/File/26043081435.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16089b57f36c81---luraxibuz.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/iqar77vti0a8sfacgc5227tgc2/38161273577.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9d97239fa---74785126871.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000113d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113D1 16368 bytes
SHA-256: 4bcf7b80bb381db2e01fdaa1b1aa874959051c6b04e135deb50240d6144588cd
font_02_sfnt_off00013e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E4C 11204 bytes
SHA-256: 2e7b1699e6f8ffa06f74579ad23798f28a60dad1f33b3bd747d0d36851855374