Malicious PDF — malware analysis report

Static analysis result for SHA-256 7444084140e28812…

MALICIOUS

PDF

69.8 KB Created: 2021-03-03 18:01:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 81fff14688a2285009f19e19bc37cd8f SHA-1: c7b825cfa01d6101700b55d630e1ad6a7d8453ca SHA-256: 7444084140e28812948ba0fdc99984cf4ec74db48d166542830d85a6fe59c55f
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://baarspo.ru/award?keyword=machinery%2527s+handbook+ebook PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4365562/normal_5fff10b2de2aa.pdfIn PDF document text
    • https://cdn.sqhk.co/dujujema/wicY9hg/fruit_ninja_3d_apk_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450896/normal_600e5499b5d97.pdfIn PDF document text
    • https://cdn.sqhk.co/dojerilu/ngdghfU/10750955608.pdfIn PDF document text
    • http://nonretloli.site/business_english_cambridge_bookya595.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446776/normal_60045c087b1e9.pdfIn PDF document text
    • https://cdn.sqhk.co/geruvijiwiw/Ahe8hhH/dub_fx_fly_with_me_lyrics_deutsch.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/phjHFpP/63514172546.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebililofo/a1ihfhf/ivory_paint_color_sherwin_williams.pdfIn PDF document text
    • http://bopokijik.iblogger.org/hermes_parcel_shop_returns_missguided.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426957/normal_5fcf33d518513.pdfIn PDF document text
    • http://repair-telefonov.ru/light_ball_pokemon_sworddobgs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470825/normal_5fe6c5ccdc3e2.pdfIn PDF document text
    • https://cdn.sqhk.co/mitebosareki/ij4Djgi/digital_classroom_management_software.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456143/normal_5fc8b3277caa9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wipovevoliku.epizy.com/62896782338.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_off0000d528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD528 5340 bytes
SHA-256: 979af26d4aac3b1ba7fc8f3f1010b63efe131d6fa698eff05c85c5502e0678cb
font_01_sfnt_off0000e763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE763 10240 bytes
SHA-256: 8fb2188097aa920b55d7b3ede9b0119b4d3817978798f64dad982aa3aa3c71a9