Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ccaf44a523cf9ed…

MALICIOUS

PDF

68.6 KB Created: 2021-02-14 12:22:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c3cc5f6ec3f4a548a302f6599b150f40 SHA-1: 2fa3c79247e75e7e1e96ba61f7059777e4b4ee6f SHA-256: 1ccaf44a523cf9ed08e8d039a81817dfee4c92335aa2a797ad707f94b0d07d6f
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/wix?keyword=bli+summer+jam+2020+dates PDF link annotation
    • https://cdn.sqhk.co/pozigafo/eNgfnii/strategic_plan_apple.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502248/normal_5ffc0dd7d8424.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467278/normal_5fe1653d4c2fe.pdfIn PDF document text
    • http://nepojar.22web.org/report_lost_macy_s_gift_card.pdfIn PDF document text
    • https://cdn.sqhk.co/vadetegubufo/Br9LhbK/33573477122.pdfIn PDF document text
    • https://cdn.sqhk.co/mozoposowi/jhjjfyX/nfl_network_channel_on_spectrum_nc.pdfIn PDF document text
    • https://cdn.sqhk.co/sabepakofo/iVghZuo/xbox_series_s_controller_leak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408584/normal_6015fc2d0f151.pdfIn PDF document text
    • https://cdn.sqhk.co/dovawowo/jguyrjf/82573974993.pdfIn PDF document text
    • https://butavuzi.weebly.com/uploads/1/3/2/6/132682386/jenipananufo_xubejinojaxufi.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/fizup/sevofidalafedolajuneke.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/nanariwapiwupunogogipel.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/blown_to_bits_chapter_2.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/5th_grade_math_quiz_questions_and_answers.pdfIn PDF document text
    • http://mevanuzexujen.rf.gd/algebra_2_test_chapter_2_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/52542498615.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/57308932671.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/widukubizetitexi.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/kigikewevugivenosu.pdfIn PDF document text
    • http://kodireso.epizy.com/ahmedabad_yearly_weather_report.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_off0000cf4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF4A 5368 bytes
SHA-256: c65aa01ee003e521aa507e9462d1dac06cd9fe5c4e75ab8a4a4070073f35f3ec
font_01_sfnt_off0000e172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE172 10480 bytes
SHA-256: 33f06059aa4e56ae878e418e52a022dc44e9b3405a6d49069762024c665c7a4d

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