Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bcac5e59dd1df1a…

MALICIOUS

PDF

70.3 KB Created: 2021-02-08 02:29:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 9782efa2dd4b73310260585a3eabe294 SHA-1: cd6da7cc71aa4e5c9fda7871a8808d2edde98e97 SHA-256: 2bcac5e59dd1df1ad039bd7127666d5a3e6b7816a082fac75a287b0c82af8d04
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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.
  • 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://yafferge.ru/wb?keyword=james%20bond%20007%20agent%20under%20fire In PDF document text
    • https://cdn.sqhk.co/lululitoj/vohgwie/kimuzedakefekebasopibewud.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/f4Y8Phc/tiktok_video_app_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/cZQyYMZ/32530579916.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/hanok7U/battle_bears_zombies_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jirowolad/b8gdMm2/58683369864.pdfIn PDF document text
    • https://cdn.sqhk.co/nifodotiriru/j4jjUyH/bingo_dog_tv_show.pdfIn PDF document text
    • https://cdn.sqhk.co/munemuzabuk/chgifhh/25316492386.pdfIn PDF document text
    • https://cdn.sqhk.co/bugininaxi/J4Olig7/dubipudezusexijenemi.pdfIn PDF document text
    • http://vashastrahovka24.ru/pmbok_guide_5th_edition_freed5m2r.pdfIn PDF document text
    • https://jedurabononip.weebly.com/uploads/1/3/1/4/131453193/motafukilopubiziz.pdfIn PDF document text
    • http://premial.su/ninitekimuminaleraziqhrd.pdfIn PDF document text
    • https://jetireduru.weebly.com/uploads/1/3/1/4/131453335/3478435.pdfIn PDF document text
    • http://twobigs.space/fenamobekoguvui6vbc.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/jeu08ig/fepovaf.pdfIn PDF document text
    • http://aires.fun/12281522870iwjuy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d68d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD68D 5548 bytes
SHA-256: e0f4a940b359c66580e052daa6c8af39db7af9b7ff665cb0bd81048b3f9979e5
font_01_sfnt_off0000e953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE953 10288 bytes
SHA-256: c80a43473474029d23dc82fde3f2b09369f9ce154ad731ab135b72c7b84143f6

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