Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cb0d120da226f49…

MALICIOUS

PDF

55.0 KB Created: 2020-10-28 21:56:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-18
MD5: 83720bdd028f9df7e0f9e0dc85d265fa SHA-1: 4065b78d8cf10c764a61f3b8962eca661f15bc30 SHA-256: 0cb0d120da226f49a07fdc2cba281e6a58687a02881a511abac3f9431f1fa424
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ttraff.me/123?keyword=the+real+barenziah+v3 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365624/normal_5f870a416db34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373239/normal_5f8e3ef08d4c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421637/normal_5f97aec60c1b3.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/zikoviwodedupili.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416500/normal_5f961bcb15af0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389571/normal_5f987f76e572a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371272/normal_5f8c43ce56301.pdfIn PDF document text
    • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/bd2b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383136/normal_5f8de571f2ef2.pdfIn PDF document text
    • https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/periwulivi_sobesaxikanafid_retaz_vusoseposip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f87bcca5d11b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419430/normal_5f9964fa75039.pdfIn PDF document text
    • https://pagofere.weebly.com/uploads/1/3/1/3/131398194/35f91dde.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/jinitorip-bolag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381551/normal_5f8d62a55b427.pdfIn PDF document text
    • https://sixonawujow.weebly.com/uploads/1/3/4/3/134369174/lawulumojamax_wozim_xigirisit.pdfIn PDF document text
    • https://feleluxotikuko.weebly.com/uploads/1/3/4/3/134338959/7949347.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/viruxumabepedi_sulifupunapesor_gegimutajatevar_gamuwewobavowaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386080/normal_5f8e8d43ba6e9.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/3f64ee5f-6519-4016-b6a7-98f2ea37c513/53376622375.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95a66b6e-a601-41a3-9831-fed3f8faa568/ronizusitekidab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad3b747e-a0b7-4c2a-b7bd-5176bc5f16a6/bawiwokefuku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deb469d1-9c9f-4c44-ba51-bd12c3dc32bd/28912388725.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d775828-91ae-4afa-815d-26f85a19228f/49929107916.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_off00009a05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A05 4960 bytes
SHA-256: 9d9e2504c0dcf15aed89199f8504261afe1b3ed0a908f488e55fd584f2a77f04
font_01_sfnt_off0000aaef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAEF 10400 bytes
SHA-256: efd5ac06eca23014ea1f618e5d8d31f21ffb232d43212a91963bd82b59a4c17a