Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda20a13e7693331…

MALICIOUS

PDF

77.4 KB Created: 2021-02-09 11:03:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 740ed70dfef7219a6c1ed4b5c9d67be8 SHA-1: ad5c03e01b4335596901e9f60bff0faa2f6f8825 SHA-256: dda20a13e7693331dc381f2d48ab95835622baf8b0cc106a99133fb98ed90d8b
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/wb?keyword=smtp%20manual%20test%20auth%20plain PDF link annotation
    • https://cdn.sqhk.co/nazopekujavi/UOPkJTq/xividage.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvitatutuv/ihJiaC2/cool_hockey_wallpapers_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/lupokuna/ycHhchh/47841942190.pdfIn PDF document text
    • https://cdn.sqhk.co/fifapupifig/lijjh2F/sponge_cake_recipe_for_diabetics_uk.pdfIn PDF document text
    • http://segipaxi.iblogger.org/motorola_arris_surfboard_sb6141_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zurovajij/contact_fox_news_reporters.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/94749985587.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/amadeus_system_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/46586983067.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/guardian_university_guide_2017.pdfIn PDF document text
    • http://nemebikox.epizy.com/bise_sahiwal_board_noc_form.pdfIn PDF document text
    • http://lusunumef.rf.gd/breville_dual_boiler_manual.pdfIn PDF document text
    • http://darewuxopasog.rf.gd/dumawoda.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/77774667833.pdfIn PDF document text
    • http://pibagejebex.epizy.com/cv_template_word_2007_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/blank_certificates_of_appreciation_templates_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/5092406949.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/android_sdk_tools_version_28.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_off0000eefa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEFA 5068 bytes
SHA-256: 57290cf806b2fec8f21ab3575f225ecbb422e957ab285b437fdfd3bae4ce7498
font_01_sfnt_off0001000b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1000B 12372 bytes
SHA-256: 8726a4a911553a6d689b6dfeab45d599e960b91920dac9b9d920841ef4f4dcb9

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