Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e32e9df27fe1a0…

MALICIOUS

PDF

89.0 KB Created: 2021-07-10 10:05:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 30c8acf33e7de8e6e3e477ce07b4e1d9 SHA-1: 8e05d219d40c61523022545686052904c232d1e4 SHA-256: e8e32e9df27fe1a08e196e744407def910ebd9a43d24a1c98a46c3edd74dbb25
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document that exhibits characteristics of a phishing lure, specifically a payment redirection scam. It contains numerous links to external websites, many of which point to compromised CMS uploads, suggesting an attempt to host malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a phishing attack designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/khctk9u21qlcaadi20kp4jrp7j/71539532410.pdf
    • http://t-p-fortune.com/userfiles/file/derivuduwemidasoje.pdf
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/ff02474a2c8c534bdc61112d9a4a692c/37696039783.pdf
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087620378755---53499256177.pdf
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/f72a66a2ecc481ac4adee682f670a98c/voliruk.pdf
    • http://brenno-tojestto.pl/userfiles/file/dojagu.pdf
    • https://elnativocoffee.com/silver/upload/files/letezajizaromifuboniw.pdf
    • http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/u4t548n2fmqus0v8sr0tk5pf90/woxevu.pdf
    • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/h1g870d4knosm3t1aljlff8ba7/45726935666.pdf
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/210ae71b17f14f0dba142e4aa31ae323/wuses.pdf
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/serq08jsd73jb1rsjojm7d86d7/majadag.pdf
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/45df53db03d1ae1eecd0bf632da8c8a5/20008890284.pdf
    • https://deitratech.com/userfiles/file/83355079362.pdf
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4862ddd3c1---95328468269.pdf
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6840630db---18367893656.pdf
    • http://novosib-sport.ru/ckfinder/userfiles/files/rapujoxedula.pdf
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c3b2d2b0b68---rusogawaxew.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608409bcd6896---43111233516.pdf
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/8d5f37500cf5d946915710c90eafc179/zobowurizuwewax.pdf
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/6dc687a6e78cf64c6086c249f24c18e4/83884102018.pdf
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/2a94f9247e6b65c5bc3164edc5455561/legunaxinabikadanevofuwup.pdf
    • http://cooperclassof1970.com/clients/9656/File/pexosekosog.pdf
    • http://beamstraffic.ae/amb/userfiles/file/67465674448.pdf
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/6d0160b19a180480bfc8e18ece7a3a4d/72146830952.pdf
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9d30786ab---femapokosumamirowugu.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=what+is+renewable+resources+and+nonrenewable+resources
    • 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_off0000f558.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF558 16792 bytes
font_01_sfnt_off00010d6f.bin
efb64928fe6f89ff747b8a69f8e9e98f80606f65ce5361c12c95933622427ab5
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D6F 10788 bytes
font_02_sfnt_off00012641.bin
187c1b96ea783ec8c95e2fe9d291f477257a64974e974e9338b4bd554da82844
pdf-font-stream PDF embedded font (sfnt) at offset 0x12641 18140 bytes