Malicious PDF — malware analysis report

Static analysis result for SHA-256 32dcc355b68abfe5…

MALICIOUS

PDF

73.2 KB Created: 2021-06-28 01:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: af5d05c5006b93580e2bf470f424f4e3 SHA-1: bfae8573b1823ec5c68b165032d82e950145fb38 SHA-256: 32dcc355b68abfe512276dacae0d9aaaf082bba3db36104c183b23b6fb666c32
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, suggesting it is designed to lure users to download further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the structure and URL patterns are consistent with a phishing or downloader campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608140b03cb52---1560154312.pdf
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/ujvklma0fpvg1m2sb5prsq9tv8/putovibovuxegimolipolipo.pdf
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/5a7c59878f7dc007782af5974f801c57/remiwubisitafejasaje.pdf
    • http://xn--or3bi2da319p.com/upload/fckeditor/file/21171386916.pdf
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/u9q68e2l32fu39odcp85ajffoq/futobaketarix.pdf
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608db161642a9---bidipenomanuvuvalefa.pdf
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/5a833de19827bfc65cc1f1260c6d43f7/fujatijamo.pdf
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160836f9c00978---22216397671.pdf
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/05fefd7bf7d17e6f896fa1f869d34484/71526580130.pdf
    • http://alexanderkanevskyartgallery.com/clientMedia/file/jiwasokanujigu.pdf
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f21182a2dd---13877433857.pdf
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/9p6e4abnph5q0311fcfmhvee8k/zogezamuvixumofuxakuxik.pdf
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/0db4c2a0e0670aa6c4ca3d700bc2a255/62503387973.pdf
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/9kr1qf8jqcvmqreifcue74ac6g/5755055006.pdf
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608fa46da908e---kuzelugurezatovu.pdf
    • https://dcmheavyequipment.com/admin/images/file/84021863800.pdf
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb9b58a276e---xidijogigisimaduku.pdf
    • http://mashtalkandil.com/userfiles/file/99801457201.pdf
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606df584eaf2e---joworoliwibazositakexiw.pdf
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160b4c01125b36---21058634319.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d84ef287294---20671830250.pdf
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160961505711f3---xavafezarotaruwagaz.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abd452bd10b---49894144302.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=wordly+wise+3000+book+3+lesson+4+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_off0000bc13.bin
7c917fc2774c758f5658825b5d11430ea472add577cf681f9ab2d85c3f215e3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC13 11028 bytes
font_01_sfnt_off0000d5ae.bin
06e7890df39613021868d9f481988f7c732ca8c7fbf359d646e1778e03234c0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5AE 16228 bytes
font_02_sfnt_off0000ff8c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8C 16792 bytes

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