Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17d74411b2692a1…

MALICIOUS

PDF

98.3 KB Created: 2021-09-07 07:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9bca17806d882346a2fcd693fad3f3f2 SHA-1: 08ef489227e92911917ba9ef17c7cad59a96245d SHA-256: d17d74411b2692a191f1692624c7624d76d84c652ca415c70b00e9ffea057dc0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. The document functions as a link farm, containing numerous URLs that point to external resources, some of which are hosted on compromised WordPress sites. The primary purpose appears to be directing users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9875

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.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609ffaf238988---bozexibegelit.pdf
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609da380d7702---10996782965.pdf
    • https://mama-light.net/business_school/uploads/file/tiramu.pdf
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a17aa7470d---lopesiponovikevuwow.pdf
    • http://apluskleaning.com/admin/images/file/15497584134.pdf
    • http://henanshuangxin.com/d/files/giwiropowewosunatum.pdf
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/431675d3216dc0b6c07caefbca502e03/25665933766.pdf
    • http://trendstyleimage.com/uploads/ckfinder/userfiles/files/32513917089.pdf
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607b67af22d37---34389559205.pdf
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/8d9067cdf0a8c60a7b06b65becaf615d/ragajinarixegugasuzav.pdf
    • https://singlespeed-switzerland.ch/userfiles/files/gabufa.pdf
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/731e87dfd58a1d94736763f778d4d3d7/dovesadovitopadotexukef.pdf
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/6eae511d24550920a7b887fe7b38efdf/4974015118.pdf
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160818d055e0d7---402108778.pdf
    • https://makenie.com/upload/files/danerolir.pdf
    • https://perfectsextherapy.com/public_html/userfiles/file/89121876565.pdf
    • http://oembag.com/uploads/files/202108152316306816.pdf
    • http://se-ty.ru/uploads/userfiles/file/lupomuwexozagina.pdf
    • http://jjkxmy.com/upload/files/202107292147203058.pdf
    • https://itracmediav5.com/ckfinder/userfiles/files/92213765578.pdf
    • http://akcjonariusz.com/UserFiles/file/74273852923.pdf
    • http://alvitraders.com/files/26550442641.pdf
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160772763f080c---zisadokozobuvalusopeb.pdf
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/8b06b50209efc9bea9bdd49a056e533d/famumaguletor.pdf
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/bf484d99e4154cfe0850a879ae605292/23931485924.pdf
    • http://cafehinglung.com/uploads/files/54978073651.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=5e+monster+manual+lycanthropy
    • 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_off0001186a.bin
71ffffac06fe1bcbcc2c9097d13dfd2b0137baf3eb36b9bfe89d1daf2ba61264
pdf-font-stream PDF embedded font (sfnt) at offset 0x1186A 19376 bytes
font_01_sfnt_off00014a96.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x14A96 16792 bytes
font_02_sfnt_off000162ad.bin
56936cdd75b0b4a3c6cb1daeaa8365055f1eb914ffc6fbf3f7a3ad1fac138fa2
pdf-font-stream PDF embedded font (sfnt) at offset 0x162AD 10796 bytes