Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec6c1fc8a341efb5…

MALICIOUS

PDF

73.3 KB Created: 2021-02-28 14:56:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 10cadbfd07ad852c4f5d95f7f12595c6 SHA-1: 3066cd43bb7202f75e068fa34ebf8eb1d5e75bec SHA-256: ec6c1fc8a341efb5088a38d2861b4b6f3abd773b0b6120c6ad60c39e52a1b7e9
196 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
  • 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://soxebez.ru/award?keyword=que+es+ta+en+signos+vitales PDF link annotation
    • http://fruitslope.online/chitta_ve_full_video_song3x6z7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404103/normal_5fe2f688d547e.pdfIn PDF document text
    • http://iminn.ru/lojedovawexikifidmhnja.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/3hdihmU/top_switch_games_2020_ign.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393763/normal_5fe4e076b6d8b.pdfIn PDF document text
    • https://cdn.sqhk.co/nemalerute/aWve3a1/super_glitch_dash_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/gf9hhoG/pet_shops_near_me_that_sell_fish_tanks.pdfIn PDF document text
    • https://cdn.sqhk.co/fojilude/gghe1he/136912940.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408352/normal_5fccf3f4e638b.pdfIn PDF document text
    • https://rudarizegofuk.weebly.com/uploads/1/3/4/3/134355262/7413202.pdfIn PDF document text
    • http://mainsale.info/fisher_price_cradle_n_swing_instruction_manualpgulr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415768/normal_5ff221db5aacc.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/donarepemi/bomuravagotuwisot.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/vpn_taiwan_pubg_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/dagifunixoper.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_off0000de8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8C 4876 bytes
SHA-256: 4288e7adb872e47846f31143795f9b4a95da6d7dc1a0ea87c456deb1d9f1e653
font_01_sfnt_off0000ef43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF43 12172 bytes
SHA-256: 2f659f76058a928e39ce993b3db67f441e70d878a93213fb9af259f071232e9f