Malicious PDF — malware analysis report

Static analysis result for SHA-256 9db97682c494eef3…

MALICIOUS

PDF

43.4 KB Created: 2020-10-22 08:38:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: ac248d83eaa0dbd8f6d1b4c105d3a8dc SHA-1: cc64f9221445645fd1a4e6ce87005ca1303af031 SHA-256: 9db97682c494eef3409e5e6c124796197207db0201b69b170a4e627bcda98d79
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.me/123?keyword=this+war+of+mine+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f90c92c307bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369306/normal_5f87f81c0276a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f8d0c3380b1f.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/c62564350.pdfIn PDF document text
    • https://virataxutepubom.weebly.com/uploads/1/3/0/8/130874282/9978555.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/225cc1956.pdfIn PDF document text
    • https://relogeseji.weebly.com/uploads/1/3/0/7/130739887/d93aa76796e1b4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368998/normal_5f8a4bb7565c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5f8d06abbcc46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376612/normal_5f8a909c9ecef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365606/normal_5f89ea1618fff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f87042be6661.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4c997f6-14b6-46aa-9cfe-031a08b8e238/risalonatot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98c755a9-0e5f-404c-9e32-3dd6e458b81c/eternity_in_their_hearts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62f9b3c9-5e06-4068-9c75-e9f4437bd856/5133378801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/287a2dd9-5e15-465d-86fb-2338b88d2531/86149051108.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/ayatoul_koursiyou.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/35599353420.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/tatuxekuf.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/pivebuvevikuvuxekekikon.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/21406567865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/likes_for_instagram_apk_para_ios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6698/5114/files/journeys_book_grade_3_volume_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1977/9247/files/79186992594.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_off00006ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD6 5328 bytes
SHA-256: da768dd03d87aada44a05122e3e87b78b89c9b843e54039a2156646cdd3ad535
font_01_sfnt_off00007cdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDF 10356 bytes
SHA-256: d196aa5431ca50f0074974ac097fd5674128b9ae28ed3aac45547eb38dd35135

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