Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a5fec047eb06913…

MALICIOUS

PDF

72.9 KB Created: 2021-03-03 02:33:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7e85e99dedf09926f70e2d9e238f9326 SHA-1: 499ef27cd0a8dcb603bad74f460c85a64012164c SHA-256: 3a5fec047eb06913b197cde0d8cf5928affa4dee0f7e2aa2247bb409c0740693
136 Risk Score

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/award?keyword=does+flat+tummy+tea+have+side+effects PDF link annotation
    • https://cdn.sqhk.co/sifujubagis/gjoifwk/school_of_dragons_codes_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/kerametunal/jhwjiVx/33798569034.pdfIn PDF document text
    • https://cdn.sqhk.co/lojibuwe/vrhhHgh/69308998292.pdfIn PDF document text
    • https://cdn.sqhk.co/pabulibig/QSJYjbI/50343178579.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/how_to_change_the_charging_port_on_a_samsung_tablet.pdfIn PDF document text
    • https://cdn.sqhk.co/nufesewepi/2xkgihi/xugoso.pdfIn PDF document text
    • https://cdn.sqhk.co/fusaduxuw/mYjbFjc/classical_piano_songs_used_in_movies.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rorazizaxaf.atwebpages.com/the_fall_guy_season_3_episode_14.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/6459621212.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/87543822800.pdfIn PDF document text
    • http://xavapofe.epizy.com/zunepabudopifurarogiviw.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/bipuroxuzofimen.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/91028563122.pdfIn PDF document text
    • http://rafazusasune.rf.gd/account_balance_sheet_cash.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/activex_for_windows_10.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_off0000e0fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0FA 5328 bytes
SHA-256: 6de5e4a5a8618e83d3e56c2bb135d1cf96385bdebed10cce60d8d02352d14687
font_01_sfnt_off0000f30a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30A 10444 bytes
SHA-256: d4cb0e55d69d48e19cb8c3b37320cb2d6569366dd971e312e9ce5e4d26c52cbf