Malicious PDF — malware analysis report

Static analysis result for SHA-256 c06ca9678d533a48…

MALICIOUS

PDF

36.0 KB Created: 2020-11-06 21:55:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: a0eb6c60bce99b38b19442e666d604d2 SHA-1: 260029e9ea7537ffd11b34ed28be22210b7bb628 SHA-256: c06ca9678d533a4855e0686358f5df6e15bb1b1c3e2a9c24fe96d8e50db1067b
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=biology+graphing+practice+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378406/normal_5f8d5c6a4c65d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384461/normal_5f97888e920ce.pdfIn PDF document text
    • https://kodowogokilikid.weebly.com/uploads/1/3/4/4/134466607/7867157.pdfIn PDF document text
    • https://nixejovebomir.weebly.com/uploads/1/3/1/3/131380485/jojiwabuse.pdfIn PDF document text
    • https://natulawud.weebly.com/uploads/1/3/4/3/134309077/dd311b7c.pdfIn PDF document text
    • https://mibakadediwo.weebly.com/uploads/1/3/4/5/134584598/nevidiso.pdfIn PDF document text
    • https://wojawafelufofux.weebly.com/uploads/1/3/0/8/130813934/8431864.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409607/normal_5f9498b9d2cff.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/ae666e59-0c70-4110-afeb-690b21d99989/sabemujenadekefukatuzejax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f05581b-9863-475b-ac7c-3cb127f5e852/pirafilip.pdfIn PDF document text
    • https://dutekosakiwe.files.wordpress.com/2020/11/najazizududifuba.pdfIn PDF document text
    • https://zebebex.files.wordpress.com/2020/11/65414133153.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdb794fa-b187-407f-8da8-92a5aa35f55d/turus.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/bojajibe.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_off00004f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F9D 5440 bytes
SHA-256: 03abcfd5dabf15383204d8330ccf3790a3ec3b196774fc7c4dde4afb7d1e0381
font_01_sfnt_off00006233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6233 9812 bytes
SHA-256: 7ca37cc906fae5e11b55dc68a1d4d007c8ad4b41ca493d0319e08e26c8f0b890