Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bfc9848cbb81ee9…

MALICIOUS

PDF

70.5 KB Created: 2021-02-18 07:55:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 950ba96bcc162863b27c21ae4ad243f6 SHA-1: a71ca8f4683cc9f6a0e95eba08805d5daa85e727 SHA-256: 2bfc9848cbb81ee97cc63c9f4bc1e22744d2d76ea911288f10d16fc21b002636
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://druttle.ru/wix?keyword=worldfree4u+lol+2018 PDF link annotation
    • https://tezijiso.weebly.com/uploads/1/3/4/6/134690371/4257667.pdfIn PDF document text
    • https://cdn.sqhk.co/sopaluwokaja/fhgjhVg/water_slide_downhill_rush_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/bapuwanuvadi/gjKtgja/super_hedge_birds.pdfIn PDF document text
    • http://orbitan.fun/31196473880n6xkp.pdfIn PDF document text
    • https://metatigizedi.weebly.com/uploads/1/3/1/3/131398099/divezub.pdfIn PDF document text
    • http://xivixevikid.iblogger.org/adaraya_agamaki_bus_horn_mp4.pdfIn PDF document text
    • http://vakakuwumegus.22web.org/xml_formatter_notepad_64_bit.pdfIn PDF document text
    • https://rokopopowatapo.weebly.com/uploads/1/3/0/9/130969888/zedasi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jemoxojuv.epizy.com/magic_the_gathering_modern_horizons_booster_box.pdfIn PDF document text
    • http://mupefapakag.rf.gd/ahirani_kanbai_song.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/travel_expense_report.pdfIn PDF document text
    • http://xexagum.epizy.com/video_er_pro_ios_ipa.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/axis_capital_limited_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/pipajuverute.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/wotlk_enhancement_shaman_pve_guide.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_off0000d4cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CB 5132 bytes
SHA-256: e927a59fef2652689e3828f34bf9e2e581202ec742719e33849dd50c9ed6c087
font_01_sfnt_off0000e670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE670 11852 bytes
SHA-256: 66eded095b5eaea201c1ebd04de3b41abd8f7826efd4e5c6aeaaa977507a55c6