Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ee93c2baf4f211b…

MALICIOUS

PDF

74.7 KB Created: 2021-10-01 12:25:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: b0dc6a0e08bcfa6bf39c7ea861eb537f SHA-1: cb6bb1b52fd567d3d1d3954d8350a33f8c993e4d SHA-256: 5ee93c2baf4f211b989607ed492b08218c0619ae630c4c11ced8488d609dfd7f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://wastran.ru/uplcv?utm_term=akeelah+and+the+bee+full+movie+123movies PDF link annotation
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/ffdg82lu0ev3q3b5mcivvt9jp5/dimowiwuwinowututogoxesop.pdfIn PDF document text
    • https://bokaichenyu.com/upload/files/82462880001.pdfIn PDF document text
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/161404d2082f49---ponojor.pdfIn PDF document text
    • http://cppzone.ru/users/blogs/file/tisaza.pdfIn PDF document text
    • http://alacartedesign.de/userfiles/file/35133434301.pdfIn PDF document text
    • http://findacommodity.com/upload/file/38658294987.pdfIn PDF document text
    • https://dodomacnosti.net/data/file/dilezejeditawut.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/5098705ab129c0903a841176a7203d92/miforiwaxezelibibajiwizis.pdfIn PDF document text
    • https://suksesunited.com/contents/files/42584892001.pdfIn PDF document text
    • https://commonlawhouse.in/userfiles/file/xanuvaw.pdfIn PDF document text
    • http://7serve.org/userfiles/file/20210917114144.pdfIn PDF document text
    • http://gps-tw.com/CKEdit/upload/files/nokejaw.pdfIn PDF document text
    • http://emeraldcovepartners.com/_data/images/file/24383318138.pdfIn PDF document text
    • http://decentlogistics.pk/survey/userfiles/files/91794603830.pdfIn PDF document text
    • https://premiersuli.hu/files/files/53727367783.pdfIn PDF document text
    • http://cp-tournament.org/ckfinder/userfiles/files/7703303069.pdfIn PDF document text
    • http://myflora888.com/ck_files/files/wuwegetewobukes.pdfIn PDF document text
    • http://homokkepek.hu/editor_up/vurowoxogujosovovepu.pdfIn PDF document text
    • https://eventaipei.com/upload/files/sukugotemarefut.pdfIn PDF document text
    • http://cinebuzz.be/uploads/userfiles/files/jatonofolixukose.pdfIn PDF document text
    • https://turkihale.com/userfiles/file/In PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1613c4551496ff---xuropubezomimodur.pdfIn PDF document text
    • http://skogsformedling.se/bilder_umeny/File/lijumutesufurazadezeti.pdfIn PDF document text
    • https://bleikss.com/userfiles/file/pujorafoji.pdfIn PDF document text
    • https://dreamscapes.ca/dream_scapes/userfiles/files/nufoworofe.pdfIn PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDC5 17064 bytes
SHA-256: b9d3e6b7e1d98922e2f8fb4175efa27eb6be3f0dadc0311147d6a19d45a33cdb
font_01_sfnt_off0000e865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE865 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001007c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1007C 11244 bytes
SHA-256: ad5f51ab163518f5c0376cc55afca0fabb0f6c1fa8cd9695536cde4f3bcec5ac