Malicious PDF — malware analysis report

Static analysis result for SHA-256 6071fd43f2ba0397…

MALICIOUS

PDF

42.3 KB Created: 2020-10-25 19:31:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: f94f71727a64ea3b9ddcae8af0db22bd SHA-1: 9ab7a43c28487b0e8fb1efa5cc277aed0d1fb784 SHA-256: 6071fd43f2ba0397482a0d64c53e10f1cfa87e9785ddd777c67528c1482d939b
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 large number of embedded links, many of which point to external PDF files hosted on Weebly and other platforms. One of the primary links directs to a known malicious redirector infrastructure. The document's content, though obfuscated, includes keywords related to fitness and the authoring application, suggesting a lure for potentially harmful content or phishing. No scripts were extracted, but the extensive link farm indicates a malicious intent to redirect users to compromised or malicious sites.

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://gettraff.ru/pify?keyword=6+pack+abs+in+30+days+apk In PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/linurigaruxox.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/bd0d7.pdfIn PDF document text
    • https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/9192808.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/lebugodoj_xufadijemorov_davubesezon_koravisawonub.pdfIn PDF document text
    • https://virataxutepubom.weebly.com/uploads/1/3/0/8/130874282/4436454.pdfIn PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/4af93938d2efd02.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/meletopadolavuxutu.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/nimanugufofuriz-zakoramogagovoj-sumomuk-duporibovikido.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379605/normal_5f8f6e051eae4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369775/normal_5f93e1d67182a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390097/normal_5f8fed242842f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374359/normal_5f890bfbb0061.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411922/normal_5f95aaba73949.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/1/0481/5149/4811/files/21065321368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2929/8852/files/38705408931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3186/2679/files/pokemon_emulator_unblocked_black.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/5027/1388/files/74411003369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9602/5504/files/64642166305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0780/2518/files/nidibexunikonewuxeriw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2931/8813/files/25748707835.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/19685656093.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/pasepubegubed.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/rimeka.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_off0000648d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648D 5612 bytes
SHA-256: 021a6f8590fc0e8126cd3ea14d9bc0a3e5b26dba6911bee097f025418d9d4b25
font_01_sfnt_off000077a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A0 10580 bytes
SHA-256: 96a1d1e6825eb0e3c9b99e308568df7a3e6ac94cdd0f758a68c55bcfb45aef57

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