Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b3db907da309dc6…

MALICIOUS

PDF

66.2 KB Created: 2020-12-27 21:44:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 3197ae2c07c9aae38e142db23911b4c8 SHA-1: adba79d720892eaa92b28a3a93759fa00fbbf8e6 SHA-256: 5b3db907da309dc6e4e2c932fac57dba46d6d16e59c0c1be5e0876d2e9db607b
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/wb?keyword=archery%20battle%203d%20mod%20apk%201.%202.%206 In PDF document text
    • https://cdn.sqhk.co/kedilexele/kp1mgcR/kasobazil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447906/normal_5fc9e38a48ec0.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/egcb7gc/snowflake_ipo_date_nasdaq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497082/normal_5fca2f7c74d12.pdfIn PDF document text
    • https://cdn.sqhk.co/jisogixij/LThbmO8/31838353675.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/tudawufed/jagerunisogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/337be17f-7d7d-41c1-8be9-2236b92eb4bb/tera_online_lvl_65_gear_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lodunixodetum/jobukajovakajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9170021e-2854-4638-b6a5-562e76a377df/the_walking_dead_compendium_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14460ccb-e557-4557-87a7-167733772a5b/the_sims_freeplay_hack_apk_android_oyun_club.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/validity_and_reliability_of_secondary_data.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17aa3da6-c400-4dda-815a-9828249253d2/hyundai_palisade_limited.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/mugen_nfl_stage.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/immortal_syndicate_cheat_sheet_3._8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0de4f55-204b-4302-92d3-0c83cc070be6/god_of_war_2_iso_compressed.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_off0000c420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC420 5964 bytes
SHA-256: 3540f5a0c5b48d57c18216f7e515ce9ec080c91e782abb88bb3c01e3b47a71cb
font_01_sfnt_off0000d850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD850 10408 bytes
SHA-256: ba027ebccc5b0a67c58ef028fd410dc3c42250a56fe131c164b010ecec0421d6

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