Malicious PDF — malware analysis report

Static analysis result for SHA-256 083a8c0914658438…

MALICIOUS

PDF

107.2 KB Created: 2021-03-13 17:47:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 256ed76d0d8c5c05ab8221f3baa67c64 SHA-1: 957c111ab92c70d0bdf84f525bbe8f896ab9f39b SHA-256: 083a8c091465843836d34e56f03e0c67597b6f1705d8851ec6c6b5dceab5fd81
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. The document body, though partially corrupted, suggests a lure related to the Bhagavad Gita to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/award?keyword=bhagavad+gita+in+tamil+pdf+chapter+18 PDF link annotation
    • https://cdn.sqhk.co/gosukutusu/iegeYjC/fulap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392871/normal_602a5490e9149.pdfIn PDF document text
    • https://wovupidej.weebly.com/uploads/1/3/4/6/134687137/4746929.pdfIn PDF document text
    • https://cdn.sqhk.co/xonipavu/jkJjehi/nawejukif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454988/normal_6020887ee91cd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479460/normal_5fdf46cc33a07.pdfIn PDF document text
    • http://silorab.22web.org/learn_french_free_audio.pdfIn PDF document text
    • https://wagemerefav.weebly.com/uploads/1/3/2/7/132712282/simezoti-gulotobol-jemokireguwuzeg.pdfIn PDF document text
    • https://cdn.sqhk.co/pumapajewa/Jh9gjn1/bubinazotanowelalotozud.pdfIn PDF document text
    • https://dukavudo.weebly.com/uploads/1/3/5/3/135328319/8807591.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446914/normal_5fe848648d72e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372371/normal_5fe05f496aa61.pdfIn PDF document text
    • http://gedobitubojufu.iblogger.org/gs_equivalent_ranks.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://s3.amazonaws.com/buwosevax/17620232566.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/65355802048.pdfIn PDF document text
    • http://zapudeni.epizy.com/17727884491.pdfIn PDF document text
    • http://romezegipoxo.epizy.com/colliers_research_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/stem_and_leaf_worksheets_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/piwawuxudutasorurufukiji.pdfIn PDF document text
    • http://pimudovi.epizy.com/71878973854.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/60709001171.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000141b1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x141B1 28688 bytes
SHA-256: b4bb0888907c4d24de0264b5bf7e7c0d53a4ff5ee433ac4f911c5632dd229342
font_00_sfnt_off00012e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E38 5744 bytes
SHA-256: 2409841644c7498d8542cf4bae4183ee482427324ffd61f55b817cea084fb2a9
font_02_sfnt_off00017a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A97 9864 bytes
SHA-256: 82c8d8e9b2c76b3138d2727840cdfe2928163876d4671bc43d79905e4b684444

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