Malicious PDF — malware analysis report

Static analysis result for SHA-256 6febe7dff0abcefe…

MALICIOUS

PDF

79.3 KB Created: 2021-03-05 08:16:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 46532072412ae6fcfd83140987de91b9 SHA-1: ca6920855dfdfa4463d4adf759cd1b014ea66ea1 SHA-256: 6febe7dff0abcefe7ed5736d20f1b88f873dfc4af994c942bf3dfbca646b9dc0
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains an embedded URL that masquerades as a search result, likely to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the presence of an external URI and the overall detection suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/award?keyword=is+there+any+big+nate+movies PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412394/normal_6039e126b2d70.pdfIn PDF document text
    • http://ledifosoxeli.22web.org/how_to_say_yes_sir_in_french.pdfIn PDF document text
    • http://parawabasufubep.iblogger.org/11458021667.pdfIn PDF document text
    • http://help-igcopyright.xyz/a_beginners_guide_to_day_trading_online_2nd_edition_ebook2luac.pdfIn PDF document text
    • http://timogefubor.22web.org/minuet_in_g_sheet_music.pdfIn PDF document text
    • http://sandiego-podcasts.com/wipodestx7b.pdfIn PDF document text
    • http://sentytld.online/machine_learning_jobs_salary_in_indiaqcxa4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503787/normal_5ff54f4f43fd5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9f349447-249b-4747-956a-316fe86e371b.filesusr.com/ugd/d2b720_f1b1de65da6940fda07fef7336415430.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/digatewekanozusajixil.pdfIn PDF document text
    • https://a22c3535-4c29-4f26-bf6b-1e631d3648e5.filesusr.com/ugd/28986c_6572774db561496cadeed93a8c11643f.pdf?index=trueIn PDF document text
    • http://kepikinol.epizy.com/reposeramuvaduz.pdfIn PDF document text
    • https://7fd92c66-d3af-485c-b7a9-31529ddfb1b5.filesusr.com/ugd/997d0f_9359af1052d3454b8ce3317f65f8222e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kukazowox/xosigenifenozedosom.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/1866627842.pdfIn PDF document text
    • https://8f1ef4f7-3f23-41ef-a3d6-4e5873a175a2.filesusr.com/ugd/d318ce_8a1a1c1dfe8d4778a93770dcd8d037e2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/9212784173.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/15088298483.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA97 5304 bytes
SHA-256: 93032acd9331edeeff8bef843d1cc5b2e7e5ffb64a2932875206b6bfa0372c78
font_01_sfnt_off00010c88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C88 10476 bytes
SHA-256: 5fc8cbf3bb24b8c1b8db779ee780f01e4e722ece965bc4d60929068dc48e485e

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