Malicious PDF — malware analysis report

Static analysis result for SHA-256 028139f3a3d1d2d4…

MALICIOUS

PDF

45.7 KB Created: 2020-10-27 05:24:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f8205004344ea0c2861dd3c77339f8f1 SHA-1: d13c0ecfa37d13d5a286cd5d4ca21ccc4dccc6c8 SHA-256: 028139f3a3d1d2d450b64c7d3969f940e0b373b247d8934c82bed29605a8dda6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a redirector infrastructure known for malicious activity. The document body and embedded links suggest a tactic to drive traffic to potentially malicious sites, possibly for SEO manipulation or to host further malicious content. The presence of a malicious redirector link and the sheer volume of outbound links indicate a high likelihood of malicious intent.

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://gettraff.ru/strik?keyword=liberty+property+management+modesto+ca In PDF document text
    • https://dufejubodumafeb.weebly.com/uploads/1/3/4/4/134444341/24f47d1.pdfIn PDF document text
    • https://sonilotosoj.weebly.com/uploads/1/3/1/3/131379329/fobamafuf.pdfIn PDF document text
    • https://nexezosig.weebly.com/uploads/1/3/4/4/134460983/3875669.pdfIn PDF document text
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/b998bee.pdfIn PDF document text
    • https://sedidumorasu.weebly.com/uploads/1/3/4/5/134507492/sidawosibome.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378620/normal_5f8ba9fe9220c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366048/normal_5f8d75489a090.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379234/normal_5f8d297532df5.pdfIn PDF document text
    • https://papazutizo.weebly.com/uploads/1/3/4/4/134467207/tomozamuzokuta.pdfIn PDF document text
    • https://lupexepiw.weebly.com/uploads/1/3/4/3/134318885/5769320.pdfIn PDF document text
    • https://nogomikosisodop.weebly.com/uploads/1/3/2/6/132681488/wusor-fuwawa.pdfIn PDF document text
    • https://ximazula.weebly.com/uploads/1/3/0/7/130738777/181a4f1ac628c5.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/1/0481/6093/1991/files/68012142785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8391/5962/files/xbox_360_controller_charger_gamestop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5336/5440/files/manuales_de_calidad_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6698/1027/files/43220121810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ab3ba5d-0517-4f22-a4f7-8c560a37cac9/73201451101.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf3e66a6-b02b-4ca4-b276-22ccd317f5ce/jelapesepin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4a9bc04-787d-4ee2-9998-5bde17d1aa80/11845460068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd76727d-6570-43e3-8f8f-545bd2d146e8/narewiponibuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f204844-d5bf-4186-aa4a-ec7d1bc4c5b9/najatoxupazedapev.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/jolofurajutumemaxajisinin.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/sutezulobijuxumotodifowup.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_off00006f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F25 5544 bytes
SHA-256: 8c715d733e15ce94deb22bd337b7a3b707008461f732f3140b438e3ee83c8584
font_01_sfnt_off000081df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DF 11920 bytes
SHA-256: 7496d74effe4583415e94de62c3f726d0082e5cff326cac3fab9de91fcd4bed5

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