Malicious PDF — malware analysis report

Static analysis result for SHA-256 29bf39e67a36c79a…

MALICIOUS

PDF

45.3 KB Created: 2020-11-08 22:46:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 90d358c7c83fa458627d815a573da99c SHA-1: 405645d5239499e5de61052c6389b38981b60187 SHA-256: 29bf39e67a36c79af258d70ea1f8923ef5713f247ec3cf4d5968db144d118a71
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://trafffi.ru/aws?keyword=answers+to+quiz+diva+roblox PDF link annotation
    • https://mawoluji.weebly.com/uploads/1/3/4/2/134265904/3a6339d9d38f3c.pdfIn PDF document text
    • https://dolufuweg.weebly.com/uploads/1/3/4/6/134626051/zivibokokobub-gukebeg-toxujoxafid.pdfIn PDF document text
    • https://lavigumujow.weebly.com/uploads/1/3/4/4/134438710/jununizenabule.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/3487778.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379614/normal_5f9e020ae04ee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/lugotorizereziwatogukomak.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/77835927141.pdfIn PDF document text
    • https://konomalipu.files.wordpress.com/2020/11/91115782662.pdfIn PDF document text
    • https://solejefiv.files.wordpress.com/2020/11/fudamidot.pdfIn PDF document text
    • https://rovamidenube.files.wordpress.com/2020/11/sutherland_s_handbook_for_bicycle_mechanics.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/nozemapopumetuve.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/hacks_for_block_city_wars_no_downolad_needed.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off00005737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5737 6744 bytes
SHA-256: 048fb1891f432488516cd811e7b04d68e7d39e548ca3495625137f8fb0c23ff4
font_01_sfnt_off0000681c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x681C 5344 bytes
SHA-256: 375b26962d2f70145721e327689597e4af6d7d1cecffa001db8210c0bb2a9669
font_02_sfnt_off00007a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A71 14068 bytes
SHA-256: a65c45fc02b6c9b8652332e47462e421395dd3774b00843eaeebce8647b8e045

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