Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c46e35d1acd1e9d…

MALICIOUS

PDF

66.8 KB Created: 2021-02-13 23:04:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 918517a124e0825015c9c231bbdb99cb SHA-1: 3e77fb59c45a5123dbd39b121b1c254967ca0ab4 SHA-256: 8c46e35d1acd1e9d886bcda945b1d7ca2d6637f2ffe6a988e9606821b648bb29
194 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
  • 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://crophysi.ru/123?utm_term=wifi+hacker+root+apkpure In PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/ic0kJmL/drive_safe_and_save_mobile_app_review.pdfIn PDF document text
    • https://cdn.sqhk.co/kitijorawul/bmyzihn/love_art_sushi_delivery.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386089/normal_5fe483076e98f.pdfIn PDF document text
    • https://cdn.sqhk.co/perajomipe/Z8hauGj/dhoom_4_release_date_confirmed.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/jahejia/2318203984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464532/normal_60258c6b0563b.pdfIn PDF document text
    • https://cdn.sqhk.co/xavonepez/wbEujhb/the_diplomat_movie_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466146/normal_600e6478812a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470985/normal_60100295673c4.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/icFFlcY/42771159848.pdfIn PDF document text
    • https://cdn.sqhk.co/kitolitik/6hijbRG/run_fish_run_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/d5chegi/fokixo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://doruxujegajaso.rf.gd/the_odyssey_1997_full_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/18386365499.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/80643113194.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_off0000c3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C4 4968 bytes
SHA-256: e124f909f1436eeb347e0fd7a3d1e2abd1943b1bd13f396d242e84349432e6e7
font_01_sfnt_off0000d4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BB 13496 bytes
SHA-256: 72a5433d62c26e7a2d405c257857c63b90debc490f2bcde81c5cc941a041ba97