Malicious PDF — malware analysis report

Static analysis result for SHA-256 a07ddfa6d7a5d361…

MALICIOUS

PDF

46.4 KB Created: 2020-10-26 04:46:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 47dad3ad1de748f642a52014141b5e2c SHA-1: 664ac82df366550fbd3ebb2f19f06733c22c9076 SHA-256: a07ddfa6d7a5d3610aca6b8a45fe0515d15cbfc7386becde57a0abd16edebe76
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://gettraff.ru/aws?keyword=tongue+twister+tagalog+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370054/normal_5f889833a21bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374847/normal_5f8a890cc8196.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384642/normal_5f930850500a7.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/9044166.pdfIn PDF document text
    • https://konoxitewe.weebly.com/uploads/1/3/4/4/134494736/9283105.pdfIn PDF document text
    • https://jazaxalik.weebly.com/uploads/1/3/4/4/134488577/9700923.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/2781923.pdfIn PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/b21bb1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/0a0224de-1e76-4100-ad4b-66186a8a6119/19275025136.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff6594dd-5f97-4d47-8d94-1ea8b80a1744/wibigavuvafopokabepuramen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ef61831-4c52-4b5a-ac42-09310193d8d3/witekugezuwirunubabo.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/xesevu.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/bpsc_syllabus_2019_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c807c8d-c576-4d3f-abab-a1adee61dbbf/kotuguj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc2f5ecb-4d0c-4115-b08a-48db927faf48/xevewupafuvevorinus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ac83bec-d678-49e3-9ea7-98eb3210f125/bidukijetojawabogamikenaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/107a718f-1b9c-480a-b9fb-b492390d92d5/momanovamekofobibevimuvat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a3f257f-fa4b-46a4-a265-3fd80d720444/silulifibovadobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24d2e2d2-76cd-4a43-9de9-6bb39f966015/30866391315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9d8f117-7b7d-48e1-a8c9-340897cf86bb/38478310651.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_off000066c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C8 5132 bytes
SHA-256: 0e22b4bbb8f1d38082f018354d4ef4aa56e0e8ee7be8752c379979521a530cda
font_01_sfnt_off0000785a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x785A 11584 bytes
SHA-256: 325919b0b3184c2fd782589fc893bd90d522a3855c93d159509658a2ded02f75
font_02_sfnt_off00009e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E2A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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