Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd37880d604f618d…

MALICIOUS

PDF

38.5 KB Created: 2020-10-29 14:48:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5added10b9ca19a16bf25cb308c2a014 SHA-1: 1d398207623cc0a5504a33921c8c06a6f3ba427c SHA-256: fd37880d604f618d2e346af91af2122551a8e1bc172ffe4de338cf66d444c83c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body and embedded URLs suggest a lure related to 'Pokemon go bot simulator apk', aiming to trick users into visiting potentially harmful sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://ttraff.me/123?keyword=pokemon+go+bot+simulator+apk In PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/wotareropajewub.pdfIn PDF document text
    • https://dokerawu.weebly.com/uploads/1/3/4/3/134313580/pexabokenujaxe.pdfIn PDF document text
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/5812975.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369794/normal_5f8b985219d88.pdfIn PDF document text
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/lapasajojiwulir.pdfIn PDF document text
    • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/4239866.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/pathogenesis_of_hodgkin_lymphoma.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/10062769519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2427/1525/files/pulufodifowuvedudelaxunu.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/27127469473.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aa4f17c-932d-49a1-b612-17acce404c97/vazibojoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be563bb3-4186-4342-89b4-2bece1b42729/40674275506.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/vobevamejoxokidixusejegin.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/80352258776.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4503 5344 bytes
SHA-256: 4ded6bebe4dc95b52207c8d15ba81b1fbae85f7f3f6d512c8e7501b75e543a79
font_01_sfnt_off0000571d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x571D 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off00006279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6279 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_03_sfnt_off00006b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B06 9724 bytes
SHA-256: c55689909707ba38c26b8fe8d5e05ed3f8a19239eaf3ec9326ec1fab420245ef

Open this report in the interactive analyzer, or submit your own file for analysis.