Malicious PDF — malware analysis report

Static analysis result for SHA-256 933bd18a0844944c…

MALICIOUS

PDF

156.8 KB Created: 2021-06-30 21:40:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 04b135b3cba50ffacf16894c8e8d7ce7 SHA-1: b8c6a1b5c9e6ed9d2edb9d224b9b123f0a2abdf8 SHA-256: 933bd18a0844944c06d2a5b964cdd195c09ec962d876b7f29f986ce6b7260733
156 Risk Score

Malware Insights

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

The file is a PDF identified by ClamAV as Pdf.Phishing.Trojan. It contains numerous embedded URLs, many of which point to compromised WordPress sites. These links are likely intended to lure users to malicious content or phishing pages. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a pattern of using disposable hosting for these links, further suggesting malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/bvjeact7decv76dfml6qkibt7j/rinabefonanebisikijun.pdf
    • https://martabaktelor.com/contents//files/ronetuvolejovep.pdf
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/45dc1392a13b9de2108eefcb9d363945/vikamuxipobilofuwigofiwe.pdf
    • http://petersonspann.com/clients/3/32/32c4b2f41fa698b5b938e848169c8dcb/File/laweretisuwizodawo.pdf
    • https://diaochue.vn/userfiles/file/24834907556.pdf
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084d5b71b7e0---sorupuluwemowujodukelitek.pdf
    • http://asiadomainstore.com/userfiles/file/87470599941.pdf
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1aef966f4---34914008643.pdf
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608f1877b0c59---rijakuratuginutavanot.pdf
    • http://nowyhotelik.pl/userfiles/file/50584716988.pdf
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7141451303---lomunafozigis.pdf
    • http://www.rodnolespropertymanagement.com/siteuploads/editorimg/file/8775482366.pdf
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac10d63a002---59036500462.pdf
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/v3p4fbih7469kcqthish768uik/jewonuvirasefagu.pdf
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/oogptmdpsm2el0k64f45hp25p6/gefolajumu.pdf
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606f39e3373db---17558765844.pdf
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c12b0bbfa78---lojebela.pdf
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/0ab83f847e050406200315ef6d691bbb/51511552475.pdf
    • https://thepainter.asia/upload/files/xirigi.pdf
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/1cc03b355a8b8fba9b6f2a128838a500/4167201288.pdf
    • http://cobbpaynefamilyreunion.com/clients/862770/File/lizupejad.pdf
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6d8f769ab0---kukomejudeloxuroxiduxes.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/667bed23feb52feb6ea114eab0233b45/26899693552.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=i+am+wiccan
    • 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_off00020839.bin
266477078e5b6e611ff613dc56aaae98e180ac51c7133e5baaf2c10c03855354		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20839 9764 bytes
font_01_sfnt_off00021d8b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21D8B 16792 bytes
font_02_sfnt_off0002359d.bin
4ec121c699feb645896144852713c4cfbeed1b872bee0f42bd20bae5e46871ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2359D 18548 bytes

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