Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dbe908e52a9d3b2…

MALICIOUS

PDF

43.0 KB Created: 2020-10-29 19:48:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 150d28702a1628a09241ce73920c972a SHA-1: 3711fd0d9f3064d928e627ad5e99084dc1b2b7a8 SHA-256: 7dbe908e52a9d3b29b9e3339078292519818b4bda5a163344cbb4d3a3941d2fd
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same URL, suggesting a lure for users to download or access content. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to distribute the malicious payload.

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 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.
  • 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.com/pify?keyword=ghost+recon+wildlands+strategy+guide+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4412767/normal_5f995d30df389.pdfIn PDF document text
    • https://pepowogipiwud.weebly.com/uploads/1/3/4/3/134344034/nuxetije.pdfIn PDF document text
    • https://woliwejimagevin.weebly.com/uploads/1/3/4/3/134319070/8dfe8047.pdfIn PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/658e3622f03381.pdfIn PDF document text
    • https://gadigode.weebly.com/uploads/1/3/2/6/132680949/dosukakibax_naludemewa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369796/normal_5f8c7b3429159.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369760/normal_5f8fa5b06f2f5.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/0562a1cc14d5d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388037/normal_5f8dc2e645450.pdfIn PDF document text
    • https://kufesolujuxubi.weebly.com/uploads/1/3/4/3/134373324/5523244.pdfIn PDF document text
    • https://penopetidurip.weebly.com/uploads/1/3/2/8/132815040/1167486.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/1/0504/5973/8293/files/pauvre_anne_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4219/5624/files/bivasiwepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/5695/4275/files/3d_geometric_shapes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3541/2648/files/muslim_pro_premium_cracked_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3991/4646/files/fazevofixaduvexutufojutov.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EE 5644 bytes
SHA-256: d4ca3c44170a2f6c2f51acadef0cc557925e9ac8fe7b497c864d5d9f57f44dfc
font_01_sfnt_off00007b36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B36 10396 bytes
SHA-256: 4eb15bac10e3a02cc50d3bd576371f2da4756fc6fba8b40aba5b2b4a707330ac

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