Malicious PDF — malware analysis report

Static analysis result for SHA-256 2932f303db82c9de…

MALICIOUS

PDF

77.2 KB Created: 2021-09-01 07:33:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 8b31e33f11fda09e82b46f8cc10ff57b SHA-1: 69fe297f52e1d4f8ae26c053bd6a516dcd6abecd SHA-256: 2932f303db82c9de18c94b6e77482f63357dc2bfa69d736e7bed949fae68523c
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to compromised WordPress upload directories, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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://igabana.com/upfolder/e/files/20210829045707.pdf In PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16076199b61e1b---vubolodozutu.pdfIn PDF document text
    • http://townsendrogersfamilyreunion.com/clients/9/91/912616e09393d205379ff76530a10a1f/File/gezebujo.pdfIn PDF document text
    • https://thehideawayresortpattaya.com/userfiles/files/7966215381.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/csme9hv0lefnfvrv7jj25kq5ns/3064842255.pdfIn PDF document text
    • https://svingenieria.cl/userfiles/file/mujibavakiperofaregaba.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/49826030206.pdfIn PDF document text
    • http://elcwma.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fonaxivurutasepasorekawiz.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080bb2ac8efc---dajetarodexalema.pdfIn PDF document text
    • http://creativecoms.net/userfiles/file/29908711829.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/9i3k5v25jfol65cr50m41k5fli/jodikanojitewarigopex.pdfIn PDF document text
    • http://jump360.co/upload/files/20210821212206.pdfIn PDF document text
    • http://onlinecommerce.bg/uploads/pages/files/50403586146.pdfIn PDF document text
    • https://dehayemek.net/upload/ckfinder/files/vaxerafukigexejakebu.pdfIn PDF document text
    • http://www.likoda.com.tw/upload/ckimg/files/dubikikomofozasaxip.pdfIn PDF document text
    • http://elitk.ru/_files/wexudenivexekinalovi.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160adcd7f4aa80---dupodegalekajerut.pdfIn PDF document text
    • http://aire-limpio.com/img/editor/file/85222647214.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16076e4c035678---roxuwetanoxesivumobarix.pdfIn PDF document text
    • http://thanuyentea.com/ckfinder/userfiles/files/17516766021.pdfIn PDF document text
    • http://ristoranteyuri2.com/userfiles/file/renozosojake.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=this+seems+to+bePDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB045 15312 bytes
SHA-256: 9a0afe9f98bce58ddd31e3e8796df85c917846491408bee478a40e6e232e74a5
font_01_sfnt_off0000d5a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A5 1888 bytes
SHA-256: 228445a3744f13af4bf84041e55802a923554d86926eb0745489ea117e4ab105
font_02_sfnt_off0000de69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE69 17368 bytes
SHA-256: 5db05d34b69ce58b1b618bce8b62249867e145cece5798b7f46de08195269bda
font_03_sfnt_off0000f8bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off000110d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D4 10064 bytes
SHA-256: a9f1d417a402dd71275be504264d370bccedfd1b9cc19ad9cf3ef315ee017f3f

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