Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0d701ceb4d155d…

MALICIOUS

PDF

87.7 KB Created: 2021-08-04 17:10:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 9857faff8d960f4b02680dd68310fd43 SHA-1: 1e3cb2ca4dbef6f40691bf0a05c2a379ba22f09e SHA-256: ab0d701ceb4d155d0a5501252d94dba66a4ba05cd96dd6c6407229ae2e5d743b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The document contains a link farm pointing to numerous URLs, many of which are hosted on compromised WordPress sites, suggesting an attempt to direct users to malicious content. The presence of embedded URLs and the nature of the link farm indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/ha54bg4ua6dqup5fsqtbiqa3sh/balavipara.pdf In PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607114c8007b1---rinogudatanitofetumutufi.pdfIn PDF document text
    • http://women-for-marriage.com/ckfinder/userfiles/files/rirubewixusizasaxego.pdfIn PDF document text
    • http://geoodwierty.pl/files/file/57052402662.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160865501c1c9c---gedadit.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/44e86053c520e40a4e3f124d97b3626a/30747833825.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b5d5d48b83b---jukidupikonulodavixa.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/94863850087.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/4b3bc3c3c11ef8f0ad28497769818467/zigozefoma.pdfIn PDF document text
    • http://rford67613.com/clients/a/a2/a20594cba7d6fe247bc87ef9b80620db/File/migekemumasoxaditunig.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/qm09l3rv2f12l1vfujha9qap6b/69772852311.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/aae2f01e2b9ca23bd946bc4b3d4daed6/78782831580.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608ca6fd1632b---jiletuxefifukifabal.pdfIn PDF document text
    • http://aptatravel.com/clients/4/48/489dad2d2d8436d4c085fc0ccdc2d1b3/File/95820829200.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/39b8fb4b3c3d328b16230aa15ca862d3/79258796222.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/588233b0f62c9004089ed383b9c27db4/peroso.pdfIn PDF document text
    • https://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/281996721ba079562c642587381fbd8c/96516160322.pdfIn PDF document text
    • http://resortvillairene.it/userfiles/files/defonunenodopaputi.pdfIn PDF document text
    • http://opusincertum.it/userfiles/files/82213007495.pdfIn PDF document text
    • https://vientangluc.com/upload/files/mutakewurirosuxozopuk.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a75387f1151---kafovalugavitevuv.pdfIn PDF document text
    • http://xinyaoqiye.com/upload_fck/file/2021-7-6/20210706094924133597.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fbed5a0a1a8---mekibamivagudefegu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=which+option+is+an+example+of+deductive+reasoning+soo+keeps+rolling+sixesPDF link annotation
    • 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_off0000f22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A3F 16712 bytes
SHA-256: 9c45cdfe1a7587cfc0d9d3f0ae64f28a8f7bc7806700073b86566776b1241a0a
font_02_sfnt_off00013588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13588 11420 bytes
SHA-256: acf206f2d352b01edf11f5b5790b7efecd49e9d32dba12e6e713081781c093db

Open this report in the interactive analyzer, or submit your own file for analysis.