Malicious PDF — malware analysis report

Static analysis result for SHA-256 32ae1c0941cbc10b…

MALICIOUS

PDF

74.5 KB Created: 2021-03-02 00:08:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 61a77ce92236f8505ecfb1d9df88ee5d SHA-1: ed669ecc9d78358bc025a2829aa802e3c7092077 SHA-256: 32ae1c0941cbc10bbc0dfcf6013c1875499333cbed6efb582e0947c876b76243
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://fokemale.ru/wix?keyword=nikon+slughunter+3x9x40 PDF link annotation
    • https://cdn.sqhk.co/telivagawu/ibifMWp/harris_jayaraj_telugu_movie_songs.pdfIn PDF document text
    • http://nikecortez.net/813409595616y6dd.pdfIn PDF document text
    • https://sizelelam.weebly.com/uploads/1/3/4/8/134867910/xevuve-malotanef-vuponelolum.pdfIn PDF document text
    • https://mezinetoxapim.weebly.com/uploads/1/3/4/8/134887379/gubow.pdfIn PDF document text
    • http://boost-store.net/multiplying_and_dividing_mixed_numbers_worksheetejd5k.pdfIn PDF document text
    • https://woxukobu.weebly.com/uploads/1/3/4/3/134392577/434258.pdfIn PDF document text
    • http://giwosoto.sportsontheweb.net/16677311854.pdfIn PDF document text
    • https://fuzewejobedogu.weebly.com/uploads/1/3/1/4/131482867/xipapuganaz.pdfIn PDF document text
    • https://binujoxejixisov.weebly.com/uploads/1/3/4/1/134108892/39dcd9822afebea.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/gezetega/lymphoblastic_lymphoma_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/cantaloupe_island_guitar_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/d_d_3._5_swashbuckler_character_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/guxavekovutiwipoli.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/8788713193.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/69038521156.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_off0000e788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE788 5388 bytes
SHA-256: 0ff4e931bd3a8659dd2cb8909f4298a105174cdb8c9b461ec0ac3e973345c61c
font_01_sfnt_off0000f9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E5 10376 bytes
SHA-256: 557b7624b4e46ebe54b2cf38b60d5b727214b8f92cd1a8e5f95083373090b212