Malicious PDF — malware analysis report

Static analysis result for SHA-256 f33a1f4ee4ddef5b…

MALICIOUS

PDF

61.3 KB Created: 2020-10-16 04:28:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 7bc3efdbd39d8f39392c88722b765b1d SHA-1: 69b997ca73e23e8e16df442bb39230a7790669a5 SHA-256: f33a1f4ee4ddef5b4993729e53669e3fabab7bf64fdea0aeddf44ac84090f74b
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?keyword=earn+talktime+free+recharge+apk+download In PDF document text
    • https://site-1038510.mozfiles.com/files/1038510/burowe.pdfIn PDF document text
    • https://site-1040391.mozfiles.com/files/1040391/53900139688.pdfIn PDF document text
    • https://site-1042271.mozfiles.com/files/1042271/puluxajiberekenijogo.pdfIn PDF document text
    • https://site-1038825.mozfiles.com/files/1038825/58730133602.pdfIn PDF document text
    • https://site-1039815.mozfiles.com/files/1039815/bekuwi.pdfIn PDF document text
    • https://ligofaxudatejot.weebly.com/uploads/1/3/0/7/130739538/2a34b7683.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/tebavu_mofevuz_punoxibera_gijipomole.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/a9f12b2aa1eeba.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/bosilo_ginasesif.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/be47935eb28.pdfIn PDF document text
    • https://site-1041583.mozfiles.com/files/1041583/javunupafepone.pdfIn PDF document text
    • https://site-1043396.mozfiles.com/files/1043396/13703213063.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372383/normal_5f88a3a7f0f48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369160/normal_5f88d314130eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371800/normal_5f885840bebff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f870b6f504c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367313/normal_5f88d47d92d43.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/41c32a8d-1bef-435d-ac97-292a4fc98635/mulivatarazubafuvuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57d537ec-d4a2-40bc-a6be-d6f1ef1cad23/5522839535.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/990b3ac7-df03-4673-af47-df77058bea34/zigozip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/426937fe-ac4a-4ffb-a6f9-176a2df4b708/99694752066.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/338cf981-789d-4f1c-b0c6-06153225105c/luzadaxiluzigav.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C60 5292 bytes
SHA-256: 2c56fa1e734a12aa7e88cae45d2f1496bd43e885a575fc6ea37dac3a0209fc83
font_01_sfnt_off00009e3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E3E 10804 bytes
SHA-256: e9a7bce7609eadc563b4c7e2b229c9f360f3d07fc4bf4c28c9af06310a5551cb
font_02_sfnt_off0000c2c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C9 16436 bytes
SHA-256: 981bb8cb98215472af7bc71e0b1cb7a1c2cc794f440c7cb1768485faf3defdab
font_03_sfnt_off0000d8ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CE 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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