Malicious PDF — malware analysis report

Static analysis result for SHA-256 b50de62e42d8a7d2…

MALICIOUS

PDF

34.1 KB Created: 2020-10-28 01:32:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 17721dcfc2fac4f439c163102928501b SHA-1: 10b38178f48ca63d592eb9b15c2be665be2eb9bf SHA-256: b50de62e42d8a7d2ba5bfca7ad4857a83b2b9e6ddde919499daf25765251fe3f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to Shopify and Weebly domains, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, indicating a potential phishing or malware distribution attempt. No scripts were extracted from this sample, but the presence of the malicious redirector is a high-priority IOC.

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://cctraff.ru/strik?keyword=wayne+trace+basketball+score In PDF document text
    • https://tanaxafim.weebly.com/uploads/1/3/4/5/134501517/1229014.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/3722212.pdfIn PDF document text
    • https://fepirajoruvizu.weebly.com/uploads/1/3/4/3/134311883/0714d9b190ba1.pdfIn PDF document text
    • https://buziratefe.weebly.com/uploads/1/3/4/3/134354065/b9b82074.pdfIn PDF document text
    • https://sewuvemap.weebly.com/uploads/1/3/4/3/134377394/497c876.pdfIn PDF document text
    • https://sazojowob.weebly.com/uploads/1/3/4/3/134351878/zasorulapedezad_xatebo_tejovejete_lariwaro.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/1/0480/7481/7693/files/physical_science_lab_equipment_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6770/6010/files/tetudifoliruzamoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/5780/4960/files/zafirotifewebaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8683/2305/files/jatiridogerakedat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0768/8086/files/jomidapetak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/tusipawenapakejetobojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1097/4111/files/pegomosewetuvokapise.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/apply_yourself_to_reading_and_teaching.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/clinical_anatomy_of_the_eye_richard_snell_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/rifoti.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_off0000468a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x468A 5112 bytes
SHA-256: 9ddbad4b56bfa69a532708f0e37d768e270c669a4112dda2aa3878b8992da0d4
font_01_sfnt_off00005805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5805 10240 bytes
SHA-256: e4b0c71fa8c9b3625759fa4b3eec05e16b76de9a1b3fead3fd491462570f1930

Open this report in the interactive analyzer, or submit your own file for analysis.