Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da655ae957c0208…

MALICIOUS

PDF

91.0 KB Created: 2021-03-17 17:02:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 75a94df8eef9ef5d36596314664b3d5f SHA-1: 9e929aaf5924212fa9460b129c36d383df78ea31 SHA-256: 6da655ae957c0208e9e06438afc355bb640c61d95d2bca48e5aa193aed984775
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a primary external URI pointing to 'https://maypoin.ru/strik?utm_term=sansui+tv+customer+care+number+kolhapur'. The document body, though heavily obfuscated, suggests a lure related to 'Sansui tv customer care number kolhapur', implying a phishing attempt to trick users into seeking support and potentially clicking malicious links. No scripts were extracted, but the PDF structure and numerous external links are indicative of a malicious distribution or phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/strik?utm_term=sansui+tv+customer+care+number+kolhapur PDF link annotation
    • http://sadovik.me/nixajogikazutojezojowokepu1j4.pdfIn PDF document text
    • http://sochi2026.com/rudeselaxz0kkl.pdfIn PDF document text
    • http://mosomupusafebin.medianewsonline.com/24619363904.pdfIn PDF document text
    • http://community-day.ru/the_tempest_sparknotes_act_5elenz.pdfIn PDF document text
    • http://tuwimig.scienceontheweb.net/ages_and_stages_questionnaire_18_months.pdfIn PDF document text
    • http://bcpzonasegur4viabcp.com/31029971115ub1ev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412763/normal_5fe3892ec5b1a.pdfIn PDF document text
    • http://gratoramaa.website/how_to_open_kitchenaid_hand_blender_chopper8bvd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445115/normal_6022165fb8e66.pdfIn PDF document text
    • http://good-production20.site/xejezeqyakg.pdfIn PDF document text
    • http://bbflowers.net/nepulurepexovoxenry.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479445/normal_604f595aefab9.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bba94533-6c03-4f09-8047-91a7805214e8/ganoferemetobanubebevanar.pdfIn PDF document text
    • https://b2f02272-107b-4032-aafc-54cdd6265a16.filesusr.com/ugd/6cf392_5086f7b3b62447a391aa25b77461686b.pdf?index=trueIn PDF document text
    • https://d2d87fd5-5f4d-49aa-ab3c-2263ce4b5d22.filesusr.com/ugd/9169d2_a3259363c4594df3996f9cd6faf8dfb0.pdf?index=trueIn PDF document text
    • https://146c8b6c-0b46-450b-8ed0-b45f1e2a4974.filesusr.com/ugd/b58d21_e4352c07eb3040f9b8efb4628f73b548.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb4a43a3-3b2f-4c02-a6bb-7759099dfffd/72341255820.pdfIn PDF document text
    • https://168d2a81-f750-40c6-a653-3787650f980d.filesusr.com/ugd/3bcfef_13e94cdfeb34491a9105118b656585f8.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000136f6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x136F6 12764 bytes
SHA-256: 89e7b83baae9d20b73a869b343606505b120e630dc1cbaff3692f2a68b8f5d9a
font_00_sfnt_off0000fccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCC 5540 bytes
SHA-256: 5a0e4cac587ee270fea9ae4d9daaee280c90afd2b73ec4df4a3aaaed2d942e4a
font_01_sfnt_off00010f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F79 11680 bytes
SHA-256: b4614467be6ab83b3944bcc216a3df5ed7a72eda0786aeaf1b7c628b5f86bbe8