Malicious PDF — malware analysis report

Static analysis result for SHA-256 32212a2c6b511ba2…

MALICIOUS

PDF

69.5 KB Created: 2021-09-24 22:50:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 2df034190a375bffd9d15cf73e417335 SHA-1: 0e14bdadc8cfe861de88396a5fe2c512c10ead4d SHA-256: 32212a2c6b511ba21dd8ac28f5855d2a3beb5e9e12bbef63c7a9d71f859b1b3c
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains. The presence of multiple PDF_RANDOM_URL_LINK and PDF_SEO_DISPOSABLE_LINK_FARM heuristics, along with a critical ClamAV detection, strongly indicates a phishing or malware distribution attempt. The embedded URLs are likely used to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://pixomot.ru/uplcv?utm_term=the+best+of+me+123movies PDF link annotation
    • http://e68momo.com/shopadmin/upload/files/95152738636.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b8e139c3cb---61659624287.pdfIn PDF document text
    • https://cantellodetersiviprofessionali.it/uploads/file/83353584675.pdfIn PDF document text
    • https://daotaolaixesontay.com/uploads/file/37453477781.pdfIn PDF document text
    • https://vsetinrally.cz/userfiles/file/pulijuzamenijidipik.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/49125ec55bb470c78a369cbfa38edeb5/18415225580.pdfIn PDF document text
    • https://geneolock.com/locktactyuma/userfiles/file/suradowad.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/16143e5fe21a44---44228043935.pdfIn PDF document text
    • http://goksirkrupskimlyn.pl/img/upload/files/10941996165.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/fdca041ff61efa3e81c773949353cc88/lorulat.pdfIn PDF document text
    • http://www.kevimotor-rock.hu/files/files/korudi.pdfIn PDF document text
    • https://agape4u.org/userfiles/file/fitojisov.pdfIn PDF document text
    • https://opsclown.it/ckfinder/userfiles/files/lumesesisapawurirona.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/2ea7e85310d56b2e47a95c111d20e28c/97945632233.pdfIn PDF document text
    • http://parkingparts.com/Upfiles/file/dutitene.pdfIn PDF document text
    • https://baigiangtoanhoc.com/upload/files/26806197667.pdfIn PDF document text
    • http://personnelstrategies.net/userfiles/file/bisuwimixele.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1614b33386267f---bemisevudakelefedavob.pdfIn PDF document text
    • http://tnslib.su/userfiles/files/subopupilexofemevegos.pdfIn PDF document text
    • https://officialbacknumber.com/editor_up/94777520978.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/t3iv97jppp1g715mc81f1il9d3/15271538704.pdfIn PDF document text
    • http://prompol.com/media/file/tomekifujikus.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_off0000b239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB239 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ca4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA4B 14764 bytes
SHA-256: 6d68f4d93653b2ce280ab36164c92e7af2aadb4ac23914833140f2c838568d6b
font_02_sfnt_off0000f013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF013 10580 bytes
SHA-256: 2d313815661e6484305f45b2047025f946d59a0ce12d0e44a37995f3fa301541

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