Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f8fa68f5b990fdd…

MALICIOUS

PDF

45.4 KB Created: 2020-10-30 14:38:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 29350be4193567c0b4d76beda10f54a3 SHA-1: 5cf1404ac87c1d61d01fc6a7ad1b9493281f7aad SHA-256: 4f8fa68f5b990fddd17f95aa25722ff082e4ea0dcb3b440139a6649f07e0813f
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?keyword=binding+of+isaac+2+of+clubs'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of the malicious URL within the document body indicates an attempt to lure the user to a potentially harmful site, consistent with phishing or malware delivery.

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/aws?keyword=binding+of+isaac+2+of+clubs In PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/da194e45eee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391000/normal_5f9b83e8770f4.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/vefipubifosujeji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376380/normal_5f91aa8aa3125.pdfIn PDF document text
    • https://daletutanedura.weebly.com/uploads/1/3/1/6/131636587/7480355.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/b6051356-3502-412c-ae32-4a5b74aaccb8/zisobodaxetem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2511/9422/files/49636030140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/6022/1864/files/tampa_cruise_port_hotels_with_parking.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7976/9498/files/problemas_de_operaciones_con_numeros_naturales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1806/2490/files/bosch_industry_4.0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9901/1738/files/destiny_2_matchmaking_glitch.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/a_thousand_years_piano_solo.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_off00007159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7159 5412 bytes
SHA-256: 9cee101b9fa6700a35bafc4b4fdfa847d95a6b0512cfda26eff74f5782bb046a
font_01_sfnt_off000083e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E3 11104 bytes
SHA-256: 3b7f71b603ad5956dc3f1f2fa161b2f7de13422403035bbe6ff444446dd6b62c