Malicious PDF — malware analysis report

Static analysis result for SHA-256 caad0ca997000e28…

MALICIOUS

PDF

46.9 KB Created: 2020-11-03 04:30:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e6492f6f1323ec49c1229ff0164b6389 SHA-1: dbce318799b1bbabf8b1dc06dcc433395cf6c19d SHA-256: caad0ca997000e28b57fe0da2123949d866e1f85e834a37103c605055f228aa2
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ggtraff.ru/123?keyword=jones+high+school+football+schedule+2019 In PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/fifugo-xeguliweso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402722/normal_5f9c1cf8dfc19.pdfIn PDF document text
    • https://vogizezadu.weebly.com/uploads/1/3/0/8/130814341/zuvebokuzibizer_sasebewar_mipijapinegixin_judubevif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404122/normal_5fa034d077f89.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/95e8e00d-20da-4277-8194-ac2a18985673/39921117808.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/programa_aprendizajes_clave_tercer_grado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9865/1804/files/zunifif.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/50908894280.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d1ed7a1-396e-4223-97d4-a60e3f37ef36/kizegijemepamoviv.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/the_outsiders_literature_guide_chapters_4-6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/3222/6203/files/unlock_lg_g4_at_t.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/monik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7bdb019-3f68-49dc-a372-5be493eee478/88411504211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04708b62-da40-4fab-ace5-cb3991da7500/pokikuxituzejagakikaxow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cfc6632-83bd-4eab-abe6-ffa2cec01127/vadefijavifimadekulorodal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0D 5680 bytes
SHA-256: 2ff0b018c38c4c94b50ffec9541e1912cddbe32da882b9d13fcce060bb4f8795
font_01_sfnt_off00007d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D55 10384 bytes
SHA-256: 648b1c63dc716c7b942f455abac735d75239446a4abbb693001a84d06fb74def
font_02_sfnt_off0000a0bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0BB 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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