Malicious PDF — malware analysis report

Static analysis result for SHA-256 34af2dde25f51119…

MALICIOUS

PDF

52.1 KB Created: 2020-11-06 03:44:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bd6cb2d40011802d6f56e06d359a0066 SHA-1: 103936046d53de508f2ff75378a58fd1181122bc SHA-256: 34af2dde25f5111953e868cc04fe79fb2625f1c4e45f5c63ad110e69bdbe9462
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://traffmen.ru/aws?keyword=stemscopes+concept+attainment+quiz+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370542/normal_5f968c93d1ca0.pdfIn PDF document text
    • https://bufazojilenove.weebly.com/uploads/1/3/4/6/134639622/480481.pdfIn PDF document text
    • https://tokenabasefegaw.weebly.com/uploads/1/3/3/9/133999291/f3f8d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408346/normal_5f927d2f1a7e6.pdfIn PDF document text
    • https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/sebapab_fegutofigumab_xekuvuzeri_zurovagas.pdfIn PDF document text
    • https://lizosodomig.weebly.com/uploads/1/3/4/3/134327767/dufexaviju-gifazowikobere-nopum-likaluvetora.pdfIn PDF document text
    • https://mejotumuv.weebly.com/uploads/1/3/4/6/134636951/14a46c98.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/36b456f6-3b55-49b2-8f77-a6e10cf6311d/23629218778.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/608_area_code.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/43502146089.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/how_to_linearize_a_graph_on_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/air_force_previous_question_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/23182658260.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/canon_vixia_hf_r82_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/sword_art_online_code_register_download.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_off00008aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AAF 5416 bytes
SHA-256: c5b23f2eac77b51259419b1fc9696b0940589d4b5bc53214bd74b6c2d21cab48
font_01_sfnt_off00009d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D2A 11116 bytes
SHA-256: c0b52368770ebe59911bd21e7555d449c080acaf66dfc2766c6d8a86a49674f3