Malicious PDF — malware analysis report

Static analysis result for SHA-256 98acd77c99b04829…

MALICIOUS

PDF

69.7 KB Created: 2021-02-26 17:32:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f8d71d6cfba5de4d8323aad62c4bd76f SHA-1: 70ba65c58fb4ac8db70c2a1709d07beb1b281d89 SHA-256: 98acd77c99b048295183acbd1c85345fcd57d2201f6065c15c2c2c5a08740a74
244 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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dafemum.ru/award?keyword=jack+lalanne+power+juicer+stainless+steel In PDF document text
    • https://cdn.sqhk.co/gunuzuli/MhgJwR2/ball_blast_cannon_shooter_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5fd14ab2a6bf7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406166/normal_5fc92ee089cf6.pdfIn PDF document text
    • https://fubexomufepa.weebly.com/uploads/1/3/4/8/134850999/1eb1cbe49.pdfIn PDF document text
    • http://dontbeshy.xyz/breakup_sad_whatsapp_status_videocynjc.pdfIn PDF document text
    • http://fishland.store/fix_kitchenaid_stand_mixer_motorq69cm.pdfIn PDF document text
    • https://cdn.sqhk.co/votijavos/hjsK0ie/wiresumofexizumuzugufawij.pdfIn PDF document text
    • http://itagreen.fun/metaphysical_anatomy_book5ykb2.pdfIn PDF document text
    • http://100naturals.fun/nigudeleloxekasonarafixod4ktqo.pdfIn PDF document text
    • https://varusimutajol.weebly.com/uploads/1/3/4/5/134502614/8296683.pdfIn PDF document text
    • https://fezuliba.weebly.com/uploads/1/3/6/0/136056139/vekufoka_pepuwuf_xerovebu_lizuderuti.pdfIn PDF document text
    • https://koreperuk.weebly.com/uploads/1/3/2/6/132680900/merugeraliru_poseke_vozafatenige.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/hjwlge0/pamatevoximasisikafefewop.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/Xijig0I/movie_maker_free_vs_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/Y5iggeM/53987341122.pdfIn PDF document text
    • https://cdn.sqhk.co/ketejeti/ejehaij/kunavisobakojowiwagemo.pdfIn PDF document text
    • http://islandlandscapesbb.com/checker_plate_sheets_mitre_10b43e7.pdfIn PDF document text
    • http://zebrait.fun/fanomaf2qtd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470385/normal_5ff67863017ab.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_off0000d345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD345 5148 bytes
SHA-256: 2519870817729af12792f286ca30793811cef8e447ec3ea485f40e4d28aa153f
font_01_sfnt_off0000e4ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EE 10588 bytes
SHA-256: 774765c05647b04566263a3e9496a234408eae9eea2761b799e00d94c90006e1