Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ca920a30767b708…

MALICIOUS

PDF

79.4 KB Created: 2020-12-17 16:35:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 744a56e924bbca8878b8d74926820dc8 SHA-1: bd7c23c7aaab942ca28b39ce07d9e64a191c9d11 SHA-256: 2ca920a30767b708f6f5b35e6b90a5b81afa466022d95479e8386daddfb2712b
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence of a malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=rca+cable+to+hdmi+best+buy In PDF document text
    • https://cdn-cms.f-static.net/uploads/4409256/normal_5fa209e5a4687.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/eaa36435-4e4b-4336-b29c-26d793ee4f6e/bugera_v22_schematic.pdfIn PDF document text
    • https://s3.amazonaws.com/giwurode/xedewizesawiwatujir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfb9fee5-57ac-46f9-8a4f-30fdf76f4291/mp3_download_lil_donald_do_better.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/silumogixinujatumutuzuka.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/72201732524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f3fae10-4700-4a1c-b09d-5cdc1a1ec623/car_engine_parts_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/types_of_communities_rural.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06f5cdda-c25f-4c74-a385-26101f5a20ca/jack_straight_from_the_gut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2922c283-995b-4038-9807-adf759d38b47/school_district_25_pocatello_jobs.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/33499500654.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_off0000f7b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B1 5332 bytes
SHA-256: f214e65ad4e77496757f480376bb4df441409c723804923c1014a97c32f07ad0
font_01_sfnt_off000109b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B2 11776 bytes
SHA-256: 9e74aa4c4bf2c62f363f38db8fe6fe1e32abaa9817fdba4ec73e974f3efd2b96