Malicious PDF — malware analysis report

Static analysis result for SHA-256 75958f07f7f9a058…

MALICIOUS

PDF

77.1 KB Created: 2021-06-26 22:18:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e82c4ae2a37554ddd87d2bac79bcc96b SHA-1: 6a5f64783f4c0027a499b428b36ad6fa27ca324e SHA-256: 75958f07f7f9a058032e104b0d282a7495d140f7574f51f91427880b424fb7c5
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to websites hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to direct users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9757

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://godparents4tz.org/home/god/public_html/ckfinder/userfiles/files/56000231878.pdf
    • https://nic-irq.com/userfiles/files/jodiziwunodef.pdf
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/5fadrb2v4gg8a6lbl9t99ff13q/43227972823.pdf
    • https://warungmimpishio.com/contents//files/30462155795.pdf
    • http://animalscipublisher.com/files/upfiles/file/vakijamuzuloje.pdf
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a343343a3d3---pokawupomenol.pdf
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081c1ff98605---dukumavawem.pdf
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add315f0fe6---64384884476.pdf
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/0jhlql3om6ta9urqfk1db0upeq/jukixivonudizujobefafoke.pdf
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/unqefmpkfk8u1k8atn1maaof3k/22903128968.pdf
    • https://gertiesbloomers.com/kousumi/nulook/upload/fckimages/file/matovogedowenix.pdf
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/68ef5f5ec6f8a01437ffbeeee34d4ac8/tomemuvubum.pdf
    • http://kiavysocina.cz/UserFiles/File/nabafelinaw.pdf
    • http://jkmdc.com/aversystem.com/userfiles/file/74740339494.pdf
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/160947fb997392---xakuzuboxu.pdf
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/00dfcc644a19885480d5ec4f7edee849/78885650168.pdf
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/7243d5cbb198ad31c1483ce649b4112c/47486217483.pdf
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf2680b8d1---43944677634.pdf
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/6semjd0a5uksjbsfeqbk9g6el1/47806779574.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607131e2e24aa.pdf
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afc1ed41aa0---ratogajemo.pdf
    • https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/980bf1051c7b3d215730b873af310480/levutujanifukobuvubodoxo.pdf
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/2d4af1343c0ffc02532ea3f37a28594e/baxotipunado.pdf
    • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/160945f6a1d4bc---lawowujugamuw.pdf
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a39ec0d2f---vimenorebub.pdf
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/313418011acf0741137af7b9b75ec236/66219762419.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=wriggle+out+of
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9ce.bin
aca7045afe758ce4c569e562e86223b3fbdd9ad05dec334d9a27eb7b0309c3de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9CE 16420 bytes
font_01_sfnt_off0000e3fd.bin
33a9a2d95ec3d057a119bfbc8b36399d0b267af73607cf5e64be24c238061ab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FD 10048 bytes
font_02_sfnt_off0000fa6b.bin
4a0b79227693992c1b96ced8bcce4e0d3ed326ae43cba25447a2aa23df5bd15a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6B 5132 bytes
font_03_sfnt_off00010cdb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CDB 16792 bytes

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