Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3038c5d3d594bff…

MALICIOUS

PDF

45.4 KB Created: 2020-10-02 20:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c585c44642f352efb8c91697838bbfd6 SHA-1: 60e258e6aec02b5a3840281bab1076b388191ae5 SHA-256: b3038c5d3d594bff9fb879bc71bd807c51d1fb0babf8489177a4d6183729336c
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://cctraff.ru/strik?keyword=eclectic+counselling+approach+pdf In PDF document text
    • http://kesejidow.colonicsandnutritionbyjudy.com/uploads/1/3/1/4/131438477/7069004.pdfIn PDF document text
    • http://jinep.doggydilemmas.co/uploads/1/3/0/8/130873843/9516297.pdfIn PDF document text
    • http://files.bryndolman.com/uploads/1/3/1/0/131070588/6863837.pdfIn PDF document text
    • http://files.rekompetens.com/uploads/1/3/0/7/130775714/f765ff301c9.pdfIn PDF document text
    • http://voduk.juliadenboer.com/uploads/1/3/2/6/132681268/sisareb_fibiriwosoj_ziriwezu_jilulewawubaje.pdfIn PDF document text
    • https://site-1037265.mozfiles.com/files/1037265/73995519453.pdfIn PDF document text
    • https://site-1037212.mozfiles.com/files/1037212/muxipupom.pdfIn PDF document text
    • https://site-1036824.mozfiles.com/files/1036824/21385951593.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/16bb5afc-7434-427c-ae47-fb7623fde06f/lufatanamula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa9ac070-a2d4-4b7f-86e0-9d308238d4c6/wagagoxopuza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccaa667b-5437-49d4-953f-dec17a467b35/gojixinuse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4966c6dc-955c-4c3d-9d55-a414a8e3dbc7/niwowupozivuwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f561fd77-ba8a-4550-8bd4-62b3eb47f93b/71599133191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/49921895891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/beneath_the_scarlet_sky_audiobook.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006484.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6484 5256 bytes
SHA-256: 77267732d73f4a6bbfc056b2849ce33c54a87bc1920cfe8e201140560db85d57
font_01_sfnt_off00007659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7659 10548 bytes
SHA-256: f4e12ecfd47ab041464ed55e30bc987ee0044f0711ce387a6272365d9dcad862
font_02_sfnt_off00009a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A67 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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