Malicious PDF — malware analysis report

Static analysis result for SHA-256 08afca72552035bf…

MALICIOUS

PDF

59.0 KB Created: 2020-11-10 01:50:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 6053c5d80bd424d5a883356cd883b888 SHA-1: 71e7d25e59c0493243f1f2ee1d93a9f1bdebe23f SHA-256: 08afca72552035bfd06a82afa623bfd4260155f8575b589655fb05ca9cc9e032
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffking.ru/123?keyword=my+hero+academia+episode+66+english+dubbed In PDF document text
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/4794125.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388422/normal_5f9bf26f52018.pdfIn PDF document text
    • https://nubukagogurug.weebly.com/uploads/1/3/4/4/134495847/256200.pdfIn PDF document text
    • https://xodunutejoxefis.weebly.com/uploads/1/3/4/4/134476009/jalitazumuda.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/tuzamada/88788614068.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/maroa_forsyth_high_school_il.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98e3e7ec-9615-4777-b83c-2d818e7f8f9b/8681930099.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/social_security_office_camp_creek_ga.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/words_starting_with_disc.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/91267506888.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/download_block_launcher_pro_apk_for_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47ebbd96-f2a3-4e61-9ebf-4aa5de9bf5af/kivuneliveluwi.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_off0000aabd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAABD 5888 bytes
SHA-256: cc145d18666f257bc410d3d7aa6adcf924da9fcf814ec7a7b4f8a4e2c0773d00
font_01_sfnt_off0000beaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEAA 9628 bytes
SHA-256: 915f715c8bfecedbd4b10a03f3893e6bb029ad459a5730cb1bd9a8e0397d5148