Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f63dc1ad1146003…

MALICIOUS

PDF

44.6 KB Created: 2020-11-01 18:10:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ff7c57475cb6589dbd058d8459e0cb63 SHA-1: d655b598de1667f1fcaa256277851087c28c200d SHA-256: 1f63dc1ad114600342c60a270dd84a987a937dfab4f70c95ef5d7fcd128426a9
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/123?keyword=holly+holm+gets+knocked+out In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375716/normal_5f9a3b0fa113a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386366/normal_5f9bb38b54f27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_5f89ea740fd15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420025/normal_5f9ea8f492658.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375891/normal_5f89f63071903.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372723/normal_5f98ca2c989a5.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://cdn.shopify.com/s/files/1/0504/5977/1029/files/42753346270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6791/5936/files/why_does_diffusion_occur_in_capillaries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/likilobis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7394/4731/files/88384879770.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f0f5c9d-c9a2-41e3-9a6b-9570ca750348/51165139759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5514/4347/files/13156974195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3941/5191/files/94164415490.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2965b0dc-c016-4e88-9ea4-7c96616fa105/77931981714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3617/9097/files/hay_day_hack_app_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11cbc6fa-2353-4a8f-b52d-28121a876e12/15483162824.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_off000061f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F1 5008 bytes
SHA-256: 7084ec084fbf20836c5eafb6f0c84942cdf28bfe228ab36ea5e25f5dae571662
font_01_sfnt_off000072e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E3 10736 bytes
SHA-256: 5eb62708e69f897f9cc735eedccd8ddc4cbb4675a1ae65c9372222547862c991
font_02_sfnt_off000097ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97AE 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378