Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dfea2186e64db81…

MALICIOUS

PDF

40.0 KB Created: 2020-10-30 17:46:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 92f2c64f98c6c92cfb53044e779266db SHA-1: 389cc34c2bb2b16ad59b323985435895099c7dde SHA-256: 7dfea2186e64db81a733e6fc48f3aca9a55f7ddd6a9a5caedd65720e35341869
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, disguised with keywords related to a game hack. It also hosts a large number of external PDF links, indicating a link farm strategy for SEO manipulation. The primary goal appears to be redirecting users to malicious infrastructure through deceptive content.

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://ttraff.cc/123?keyword=madden+mobile+hack+no+survey+ios In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369305/normal_5f900935dc5e6.pdfIn PDF document text
    • https://boxolajabamofi.weebly.com/uploads/1/3/4/3/134356625/sewesewozawodi-zutono-luraxozeporoviw.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/5162795.pdfIn PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/2504478.pdfIn PDF document text
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/rebibaj_liviwi_wagataba.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/1/0496/2936/4387/files/nissitissit_middle_school_hours.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/2527/4296/files/norujiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/3922/5504/files/solving_exponential_inequalities_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5168/2454/files/motorcycle_riding_club_bylaws.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f9dc8a6-b975-4b3f-bef0-2eb3fd290c58/46765668623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/273efbe6-83cd-4e66-b314-9f1c5391fc72/vapekewokanotavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8222/8936/files/50731845217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8488/1827/files/vaxizuvejutopafu.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_off00005d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D93 5552 bytes
SHA-256: 84b042bcc0b42563bf7007e868f11ff9139cc2f890f7d9106204251d6bfab542
font_01_sfnt_off00007058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7058 10140 bytes
SHA-256: e89717c8d573ec91cee59458cc1d2140a14d305b8ad93efe867a4408deddb8ab

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