Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e735b543af96341…

MALICIOUS

PDF

50.4 KB Created: 2020-11-09 07:23:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 3eb839805c625d096a0c0f6bca6f4f55 SHA-1: 29b232da0f32adef4a5e4702d7e5c79e56dd5c17 SHA-256: 8e735b543af9634175bc1a9c5b5f2f4a163cec61f0d32a5e93ae1b3b767f1cb1
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://traffking.ru/123?keyword=double+indemnity+1944+film+locations In PDF document text
    • https://wenadexedodoren.weebly.com/uploads/1/3/4/3/134322255/3420096.pdfIn PDF document text
    • https://fimetopim.weebly.com/uploads/1/3/4/3/134399480/a3fb6b89ad.pdfIn PDF document text
    • https://duxawedi.weebly.com/uploads/1/3/4/4/134477895/f56e45.pdfIn PDF document text
    • https://lumifuwuzuzeb.weebly.com/uploads/1/3/4/6/134698668/mugexil.pdfIn PDF document text
    • https://sigakoge.weebly.com/uploads/1/3/4/4/134437147/4593166.pdfIn PDF document text
    • https://mumamelif.weebly.com/uploads/1/3/4/4/134464597/7466227.pdfIn PDF document text
    • https://bazawafamojuw.weebly.com/uploads/1/3/4/5/134508147/3131838.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/be284216-f17e-4221-b5a7-405b2862dd96/23947951456.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27b3aa33-9dc7-46eb-b281-9473255c685c/84131763597.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23b5730a-c266-48a7-b110-7c57d90e567b/9393183170.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/31560010760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb36428b-e9c0-4ede-ab53-45dee5c21585/fetojabolaguvajup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0493df1-a21b-4108-95be-b1831e230c7b/letiwowimunebo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000628c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628C 9392 bytes
SHA-256: 82c6daa27f9cc3c182c4d2e99341d005b58a9af41fda941dc46479a062446f16
font_01_sfnt_off000081bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BD 5608 bytes
SHA-256: c904affa8d705eb898b50b608b6a8e5a3a834722ec530e74c5ddfb5713636d8e
font_02_sfnt_off000094d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94D4 11632 bytes
SHA-256: 0f9d6bcc2c65b00881a4c5c97550a2f83479e9249bb1b5cdc8b70e2b2ab5230c

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