Malicious PDF — malware analysis report

Static analysis result for SHA-256 012aeabbefe6b4b3…

MALICIOUS

PDF

76.9 KB Created: 2021-09-06 13:37:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 629dd75d7bf4b8cf327a4ddbd1513599 SHA-1: b1576a5238b4b23fc9db544fdd3221d56a756622 SHA-256: 012aeabbefe6b4b3254833f148d6d3f7d64e01492d0a0deb6b4cfb2f525240e2
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document functions as a link farm, containing numerous URLs pointing to potentially compromised websites or disposable hosting. These links are likely intended to lure users into clicking them, leading to phishing sites or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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://spoilersmensgolfclub.com/clients/865201/File/52369716023.pdf In PDF document text
    • http://artediapharma.com/upload/files/kigowulo.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/1oip4ttonsjr46hjv8d1hh4mec/70671252892.pdfIn PDF document text
    • https://10s317.com/uploads/files/202108300857544781.pdfIn PDF document text
    • http://energo-winstal.pl/userfiles/file/332539839.pdfIn PDF document text
    • https://pensiunea-escape.ro/ckfinder/userfiles/files/57708191649.pdfIn PDF document text
    • http://www.awakohchang.com/image/upload/File/9908615050.pdfIn PDF document text
    • http://noithattamphuong.com/upload/files/67857245344.pdfIn PDF document text
    • http://zulassungsservice4you.de/bilder/file/zigirosipeka.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/a7831e7d1229455178b22da7d30e9c9a/safigotobo.pdfIn PDF document text
    • http://suachuadienlanhhoaphat.com/hinhanh_fckeditor/file/fumonarogalogavunil.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/du7f50rgk78pko10fpauereh1b/24981560669.pdfIn PDF document text
    • https://maribon.net/app/webroot/files/userfiles/files/77452296971.pdfIn PDF document text
    • http://starsunited.at/upload/files/41455618672.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/bb8ba562c38c869cf7075b0cadc8314e/tejunixaxesuzevelunop.pdfIn PDF document text
    • https://www.winsum.frl/ckfinder/userfiles/files/16167972257.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160977e602969d---58778132064.pdfIn PDF document text
    • http://sprostredkovanieuverov.sk/res/file/gubiwelobelofojumewefam.pdfIn PDF document text
    • https://fotovipvercelli.it/file/87357706284.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a70edd975e5---pigifijubexutefuliwo.pdfIn PDF document text
    • https://fairtradeportal.pl/userfiles/file/57572405695.pdfIn PDF document text
    • http://benardoutlite.com/admin/fckeditor/fckdata/file/vidilekitetes.pdfIn PDF document text
    • https://rlmahtani.com/userfiles/files/40301254480.pdfIn PDF document text
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/a099026df4970533ae2dbf0e8cf68c24/89770644964.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/59240997616.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=le+groupe+verbal+exercices+pdfPDF 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_off0000c494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC494 10956 bytes
SHA-256: fdffb5f99f7d366ea31095be99f3773456576e49795df84613064f5d2978f63e
font_01_sfnt_off0000dda8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA8 18580 bytes
SHA-256: 249a87fb9bce285cc2a4c1f0cb124b127a93509051ee59f4f661859397980cb8
font_02_sfnt_off00010c7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C7F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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