Malicious PDF — malware analysis report

Static analysis result for SHA-256 aded768f2db09c1f…

MALICIOUS

PDF

40.9 KB Created: 2020-10-14 22:26:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7f04f6a0d2d06f4ecd6d39bd10ea992e SHA-1: 708a823f6f2afb028e0b7fe4e5c26450c973fa9f SHA-256: aded768f2db09c1f2e65037a31afd50a86b43b51b6e7266d73d27a628933bb1c
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://ggtraff.ru/pify?keyword=transformation+of+sentences+worksheets+for+grade+8 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f8714a076c85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5f8736491da2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f8723897330b.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/diren.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/7c2eb3c.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/femesuzef.pdfIn PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/tigosorivibisakoxu.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/f5d445.pdfIn PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/10d616.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/sokilijaw.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/didus-zafuvij.pdfIn PDF document text
    • https://site-1039456.mozfiles.com/files/1039456/dogituwenuka.pdfIn PDF document text
    • https://site-1042270.mozfiles.com/files/1042270/92483669114.pdfIn PDF document text
    • https://site-1043965.mozfiles.com/files/1043965/7699271856.pdfIn PDF document text
    • https://site-1043096.mozfiles.com/files/1043096/16292494793.pdfIn PDF document text
    • https://site-1037854.mozfiles.com/files/1037854/basafomigazisafateg.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/5afca260-affb-456c-9d7d-b04da3185f4c/lumeti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b65f7089-4da4-4293-a419-032427bbca24/xudodovuluremipoxuximede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3e73107-bbce-41bb-bf02-e9b1d07f19cd/botexoxetaruvek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/31921014633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9209/0788/files/king_of_queens_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5222/3642/files/wures.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_off00006008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6008 5704 bytes
SHA-256: 598de277cc9c9b29e1c1361c090640db1fc68cf3d5e690ac3003e22d654d4898
font_01_sfnt_off00007354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7354 10132 bytes
SHA-256: 9f47497c48a361c7f25ce1dacd46bf1c6b3d2bc076e4f4d185d00caeaf032034

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