Malicious PDF — malware analysis report

Static analysis result for SHA-256 68209a6da85ab4a4…

MALICIOUS

PDF

95.7 KB Created: 2021-06-26 00:09:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ebd96d51b93245eb32adea37f9ec90a1 SHA-1: 30eb5f8c5066f793fbedb1bc9633cccf8031a81b SHA-256: 68209a6da85ab4a44748061a21f8440521b76fd63cd37f954576ed8da82d9ce1
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains numerous embedded links, many pointing to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The presence of external URIs and link farms indicates an attempt to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pistant.ru/uplcv?utm_term=how+to+induce+breastfeeding
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16087262fcb140---wuzurerireg.pdf
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/mu8gt9espnitj6aprsufp7era1/bofirujinirifekosevuz.pdf
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/50194bfbc4d2e998e62083a59f6fd689/34462743294.pdf
    • http://stpatricksreunion.com/clients/84553/File/33402184362.pdf
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/dd174a2ae1deb2067f30aad1de21656a/todokimukakidafuvuzibedov.pdf
    • http://residencecarlofelice.com/userfiles/files/nawinadakobolaren.pdf
    • http://analogsys.com/uploaded/file/1266284259609587a42985e.pdf
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c02521dc1a0---dubegebav.pdf
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160a844526a965---zuxas.pdf
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a15f6d982f2---zijijafazomi.pdf
    • http://ttc-investco.com/img/files/sakujowojonejodurumiziser.pdf
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/5a2ucg8ie0p33m0kip5fvet735/jomolurusigunipamunute.pdf
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160c49711cb903---rilifopakuvusonuf.pdf
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/218346519dbd360f0832d1eccc0fdbfa/8056521745.pdf
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/ec420fd1b3dee6fdf636d91c2e9405de/lejadegojamebu.pdf
    • http://aftckwt.com/uploads/file/numixumigusidelaw.pdf
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b095b3b34---fobufijudejipekesusexuj.pdf
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/6qnf4197v095nsbl9libj2mlg7/15255514481.pdf
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160823a487ce05---migaluxu.pdf
    • http://vietthanhstone.com/images/news/file/39184660106.pdf
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/dlqqj541491loks91qugg5khkb/92600143353.pdf
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1606c87ad0e1c2---30394121964.pdf
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160844c2654f74---1121582831.pdf
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/bc76384d59eb14cdb115bfc26749a1d9/lubuvejotive.pdf
    • https://implant-drill.com/userfiles/file/fobubafafimatobuwunaroxe.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_off000112c9.bin
a4943c44659340e8680af577ee52cf45571b15124bfacc4717198d56c872fa16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112C9 10924 bytes
font_01_sfnt_off00012c15.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C15 16792 bytes
font_02_sfnt_off00014427.bin
835654bb043a8fdb0d50832bf6cd20a4b0f05445ce7be5bd5e62bb90c2e2fea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14427 17468 bytes

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