Malicious PDF — malware analysis report

Static analysis result for SHA-256 1632b2283fedb601…

MALICIOUS

PDF

56.2 KB Created: 2020-11-07 18:04:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 2f2204087fbe747f5b6036be01d1f427 SHA-1: 9013389c9b5b4a77e7b5c164f098d068d0fee708 SHA-256: 1632b2283fedb601773a9972d84f30fd06a94c4f07fcd7c6a807bed1e55d5329
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/aws?keyword=pokemon+go+location+spoofing+android+2019 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4411231/normal_5f95dbe2a3d0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391305/normal_5f8f863cad5b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370280/normal_5f8d6a5459825.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383579/normal_5f9ac712ea5fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375700/normal_5f8e07ee56a8c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://givolajokofe.files.wordpress.com/2020/11/japatewajaliwififu.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/53876330640.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/madigajaluwivofoti.pdfIn PDF document text
    • https://zopovamodutu.files.wordpress.com/2020/11/45329342212.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/sagob.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/simplified_method_worksheet_2018_schedule_c.pdfIn PDF document text
    • https://jezadamoz.files.wordpress.com/2020/11/luwevegaga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a675f402-2cb0-4f2a-8e34-b1111cd2ff23/xititupadikolav.pdfIn PDF document text
    • https://bipewogudi.files.wordpress.com/2020/11/bugetoxaf.pdfIn PDF document text
    • https://zegasaxum.files.wordpress.com/2020/11/33719047116.pdfIn PDF document text
    • https://kigozis.files.wordpress.com/2020/11/2489495056.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_off00009861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9861 6020 bytes
SHA-256: 3389ccd1a9a909d96d66fca503e1d9e8418bc4a0c6026d80db10ff780bebc5f2
font_01_sfnt_off0000acd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACD3 11092 bytes
SHA-256: 407d19fa6975bc01d2c837aa53fb19b2d7831f16d72dcd6ef826cfabb8b30940

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