Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a14bef67acd026…

MALICIOUS

PDF

42.1 KB Created: 2020-11-07 13:41:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 2e3bd8d22b09044cde133021e4f1c4d3 SHA-1: 8551a35f702d8a6a8f25d8cabf34b9c303fb1f67 SHA-256: 89a14bef67acd0263c7eca5a8ee7e1fd60ee8ef2bf3a61e7a978d1963179f0ae
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://traffset.ru/123?keyword=pioneer+202+metal+detector+manual PDF link annotation
    • https://zajuzuvo.weebly.com/uploads/1/3/4/4/134474050/lifivo-besamazu-raduvevexese-pitujomiwu.pdfIn PDF document text
    • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/8070014.pdfIn PDF document text
    • https://valezofijamope.weebly.com/uploads/1/3/4/4/134445284/timokoxip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424991/normal_5fa2e8c8f02e3.pdfIn PDF document text
    • https://bakuwosir.weebly.com/uploads/1/3/0/8/130874569/806294.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367277/normal_5f8a07ffc1abc.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/vutame/fodusizofu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06ad6a20-fb1a-41ed-b6b3-f4f17bc41c13/68969270196.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ab414d6-8369-40db-8b9b-9fc9f5cc1d59/44286776963.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74405c1e-df69-4067-b0c8-afe7d70e5a01/34061262555.pdfIn PDF document text
    • https://tuxabavijig.files.wordpress.com/2020/11/37940387668.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_off00006418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6418 5184 bytes
SHA-256: 0efa933a5edfdb43cea846a1ef1ab40e267d91fa57a96dea6240e7d957ff98f6
font_01_sfnt_off0000759a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x759A 11168 bytes
SHA-256: 8685a3a5eb70e05f133bc419201445308663ea0a0092adeb84cb737cfb328eb6