Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8cb3c27b78d699…

MALICIOUS

PDF

318.0 KB Created: 2021-04-08 08:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a49e9e26400a0604f2f35c888e11dda1 SHA-1: 517bcad831a598ad2868217eba2a2844c43f94b8 SHA-256: 2c8cb3c27b78d6992cdfbd13acee02c079f7359035c3091c43a8b2a90cf812e1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, and ClamAV detection confirms its malicious nature. The document body, though heavily obfuscated, suggests a lure related to 'unfinished tales illustrated'. The presence of embedded URLs and the ML classifier's high confidence score indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9458

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/strik?utm_term=unfinished+tales+illustrated PDF link annotation
    • http://pobunav.sportsontheweb.net/17244513924.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387817/normal_5fc5920a9bd66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374857/normal_603030425fb44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425504/normal_6015c8e69a6b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483103/normal_5fd9d088b7537.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473632/normal_5fd6c2ac77f2b.pdfIn PDF document text
    • http://foripekomufotir.mypressonline.com/branches_of_physics_and_their_definition.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470835/normal_5ffa58eeed89b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481539/normal_5fe98a00b88bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418370/normal_6013bdede8d48.pdfIn PDF document text
    • http://jabudapitu.scienceontheweb.net/7303509496.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377656/normal_5fcf1f8ea5606.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381081/normal_5fec6db41882f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477873/normal_604ccf0f88484.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a1c9bafd-2917-4c1b-b79c-a4b44a941470.filesusr.com/ugd/f0f215_2b1847847e7646f8aad5309d6d56a4c9.pdf?index=trueIn PDF document text
    • http://satelogagolibo.rf.gd/charles_shirley_jackson_plot_diagram.pdfIn PDF document text
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_6db518d420a24572822ddc5b10981c79.pdf?index=trueIn PDF document text
    • https://8319d365-0190-44ee-b2f3-e76f6fd230eb.filesusr.com/ugd/112488_18f36cf1862b4f05bd0527a80c13a654.pdf?index=trueIn PDF document text
    • http://dikaroko.rf.gd/7839639350.pdfIn PDF document text
    • http://pidodexogejax.myartsonline.com/is_diablo_3_couch_co_op.pdfIn PDF document text
    • https://ae8c1479-5121-4009-b0ed-8259dbb1205b.filesusr.com/ugd/0aff45_e3128c3cfc6346b6ae296a8989a0bd7f.pdf?index=trueIn PDF document text
    • https://80c93ba6-74df-4afb-9852-3a83eaba20e3.filesusr.com/ugd/4cf28d_3e587251f4434ea7a42c8a1f3bc8a914.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
font_00_sfnt_off00045fb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45FB3 21344 bytes
SHA-256: e823f0539b9b17a046dc59fe83a10858ab2e8c6288db8467d7d30cbc613fba33
font_01_sfnt_off0004a127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A127 4984 bytes
SHA-256: dddebecb370091eb3b9b9d03b4762874bca991ecec690b71b2666cd8f5b0b772
font_02_sfnt_off0004b216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B216 19480 bytes
SHA-256: 3178d560fa9d4fddd11c0c34d0a5de7ce2d63d62ef2d1d822a2835fd43bbcb00

Open this report in the interactive analyzer, or submit your own file for analysis.