Malicious PDF — malware analysis report

Static analysis result for SHA-256 100ed49d9a0bdc55…

MALICIOUS

PDF

37.6 KB Created: 2020-10-09 14:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 95e901b69b10268c7dce69f274951c01 SHA-1: b34ce43de26ad287cda19e0b1de4e00e2902a865 SHA-256: 100ed49d9a0bdc556be027d5700fe2856902eb391f5fe38afa290450e0805a1a
124 Risk Score

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 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=roads+of+rome+3+free+online+game In PDF document text
    • https://site-1040442.mozfiles.com/files/1040442/5103286729.pdfIn PDF document text
    • https://site-1036833.mozfiles.com/files/1036833/tiliwasotiroxone.pdfIn PDF document text
    • https://site-1037230.mozfiles.com/files/1037230/88633877312.pdfIn PDF document text
    • https://site-1037009.mozfiles.com/files/1037009/dowakekigoxewugafuxadulu.pdfIn PDF document text
    • http://files.stcyrilorlando.org/uploads/1/3/1/3/131398129/nerapijuropel.pdfIn PDF document text
    • http://files.traditionallaycarmelites.com/uploads/1/3/2/6/132696174/3538679.pdfIn PDF document text
    • http://files.instantcleaningservice.com/uploads/1/3/0/8/130874422/12dc2134c2a416.pdfIn PDF document text
    • http://files.shyzarsue.com/uploads/1/3/1/6/131606876/4565351.pdfIn PDF document text
    • http://tosav.mankatofigureskatingclub.org/uploads/1/3/1/3/131383936/ba57866.pdfIn PDF document text
    • http://lusoxowa.choubijoudesign.com/uploads/1/3/1/0/131071164/dazomofabexogeno.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://cdn.shopify.com/s/files/1/0434/4138/9724/files/g.co.a.5_worksheet_3_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2940/8155/files/kurevegadufodu.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_off00004987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4987 5108 bytes
SHA-256: 3fa61fe6ba27d022f91abd8d387fcc61bde09615c2ac5c3d1421b282834113c2
font_01_sfnt_off00005ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC2 9524 bytes
SHA-256: 1513c052ceff599d422d39bae887c5015c9bcf4b2d9bf2061451b8806247849b
font_02_sfnt_off00007b52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B52 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176