Malicious PDF — malware analysis report

Static analysis result for SHA-256 a08dc5b0e23bc098…

MALICIOUS

PDF

46.0 KB Created: 2020-10-29 06:20:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a01916d61d5e51254f20d8da1069ac9 SHA-1: 7459d8aa5f59fc95f34f5dec3026ed010a7f054e SHA-256: a08dc5b0e23bc0982023c29d73b20e6e3d377af1095d24494090d874da24b8e5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one identified as a malicious redirector. This suggests the document is part of a link farm or phishing campaign designed to direct users to harmful sites. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 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.
  • 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://gettraff.ru/strik?keyword=lucky+peak+dam+swimming
    • https://lasajiboz.weebly.com/uploads/1/3/1/3/131379041/a16bdb9ed4b85.pdf
    • https://lejigatoni.weebly.com/uploads/1/3/1/8/131871980/2945570.pdf
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/menopeda-fugijumetijo-mavenidimadizem.pdf
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f87a164b8de8.pdf
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/bewomo.pdf
    • https://pufotawimudob.weebly.com/uploads/1/3/4/3/134380049/bepixefaner.pdf
    • https://cdn-cms.f-static.net/uploads/4370285/normal_5f924829eca10.pdf
    • https://jabiratunibi.weebly.com/uploads/1/3/2/6/132683422/rofagisiwim-zinam-fogoxo-jujome.pdf
    • https://cdn-cms.f-static.net/uploads/4404299/normal_5f9508c862fc5.pdf
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/2a995a4d7f07.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3c96b42f-f99d-49ec-8a95-1c5eedce1b48/16356860632.pdf
    • https://uploads.strikinglycdn.com/files/90e400f3-17d2-4c28-8589-04b6569237ca/16844735867.pdf
    • https://cdn.shopify.com/s/files/1/0499/6120/5924/files/download_aplikasi_convert_to_word_terbaik.pdf
    • https://cdn.shopify.com/s/files/1/0476/5047/2102/files/rewebutebefaf.pdf
    • https://uploads.strikinglycdn.com/files/114ace5c-841e-49ac-a503-8867955a714f/pathfinder_druid_spells_guide.pdf
    • https://s3.amazonaws.com/bisegilupuf/dovixasalilipiwuv.pdf
    • https://s3.amazonaws.com/votubukaxogilix/zojajolivitebijipa.pdf
    • https://cdn.shopify.com/s/files/1/0484/5017/5126/files/st205_75d15_trailer_tire.pdf
    • https://s3.amazonaws.com/gupuso/cask_of_amontillado_activities.pdf
    • https://s3.amazonaws.com/wunupalezozerud/writing_tracing.pdf
    • https://uploads.strikinglycdn.com/files/8031452e-2a91-44c4-8eba-9a56588ed8cb/52256200735.pdf
    • https://uploads.strikinglycdn.com/files/e6dfd03b-a0b7-4d5a-b8af-063c0f6e7981/leguwo.pdf
    • https://s3.amazonaws.com/dinigugaxej/mixutolobobalogozulotemin.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071fa.bin
51189e7deae728021ae7bba60753029c328d70a31973964cfe2ed17e3b46268f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71FA 5464 bytes
font_01_sfnt_off000084a9.bin
d6b5a8c8870e8e30abc90df264cf906f7eb12308b05a0f64b0244a64a66c9267		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84A9 11152 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.