Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e946de0a628c5c4…

MALICIOUS

PDF

42.2 KB Created: 2020-10-02 11:35:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e65cb385dae26e7ed51db24374d9fb05 SHA-1: 6815ebde693eed4db168bdfe4a191185f2eacf73 SHA-256: 1e946de0a628c5c4628c2565454de211d1f6fbf19c8a50c70cf999a6e6389bb3
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://cctraff.ru/strik?keyword=i+saw+the+devil+eng+subtitle+download In PDF document text
    • http://gunej.access-genie.com/uploads/1/3/1/3/131380600/fuvetogozitomiforav.pdfIn PDF document text
    • http://files.citizensforcivicrenewal.org/uploads/1/3/1/8/131856257/xugeruzufoda.pdfIn PDF document text
    • http://files.kidsks.org/uploads/1/3/2/3/132302940/xexan.pdfIn PDF document text
    • http://jobitis.skylinebitandspur.com/uploads/1/3/1/4/131483025/nojivedaxuwi.pdfIn PDF document text
    • http://putiroj.751sttankbattalion.com/uploads/1/3/1/6/131606289/9635974.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/931cf350-5ebe-49d6-9125-b06dcc43b4fb/tipusufazadovuzifepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b240a321-0f3e-4c0f-b23a-7f08cf70d80f/23151935814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13f92b33-be4e-453b-8d33-e2260846b3b5/21107271254.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a61299f9-62f0-4731-b8a2-8065d7ec5129/babif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83a029f5-a991-4189-baf2-674fdefafa2d/13434633678.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd357400-890d-4932-a7d3-6d167a70adcd/54839818500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/culligan_water_delivery_san_diego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4965/0838/files/jujesegijijinizepi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53EA 5536 bytes
SHA-256: 8db914c8b447c1118fd2c02fde5fd0b6a68be0b95c46e0a5d3369f43e44d50c9
font_01_sfnt_off00006712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6712 5220 bytes
SHA-256: 173036290a276373302b23ce4c34fb1bdbc2df92ae10c4dd4bc623b335edaa85
font_02_sfnt_off000078ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78EF 10108 bytes
SHA-256: 8ac746649b024a614f66961c257d7a51cdea559d382a6240da9a597c9b9e8e06

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