Malicious PDF — malware analysis report

Static analysis result for SHA-256 02457ccd6a233491…

MALICIOUS

PDF

41.1 KB Created: 2020-10-07 15:08:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 432e490029f35666f5f92da35b4d3baf SHA-1: ffbc40e3c8088cb0c5633130cd3073ddb487c2cf SHA-256: 02457ccd6a2334914fbd440fc1c4a175603eaf486cb155ad8fb9aff1a7867070
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://gettraff.ru/pify?keyword=born+on+friday+13 In PDF document text
    • https://site-1039341.mozfiles.com/files/1039341/zivikexifivomagotofuvujab.pdfIn PDF document text
    • https://site-1042983.mozfiles.com/files/1042983/kekudolonipug.pdfIn PDF document text
    • https://site-1036879.mozfiles.com/files/1036879/fijapuz.pdfIn PDF document text
    • https://site-1037115.mozfiles.com/files/1037115/pagikewatawolisabopiki.pdfIn PDF document text
    • http://files.neksscottishrite.com/uploads/1/3/1/8/131871518/midokokebade.pdfIn PDF document text
    • http://files.nhnbha.com/uploads/1/3/1/4/131413905/699d1.pdfIn PDF document text
    • https://site-1036894.mozfiles.com/files/1036894/migibuf.pdfIn PDF document text
    • https://site-1036689.mozfiles.com/files/1036689/11417969552.pdfIn PDF document text
    • https://site-1036921.mozfiles.com/files/1036921/buriv.pdfIn PDF document text
    • https://site-1042883.mozfiles.com/files/1042883/60813371360.pdfIn PDF document text
    • https://site-1037219.mozfiles.com/files/1037219/64345103148.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2547/1400/files/diccionario_latin_espaol_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2547/1400/files/greenworks_1800_psi_pressure_washer_replacement_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/6488/5916/files/88668830847.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FC 5056 bytes
SHA-256: 697d26f97843655e3de585f494b31286a99f0c5824bcd37db09e16b1ce2eac95
font_01_sfnt_off00007558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7558 10208 bytes
SHA-256: 456bab3e46715c8b8f2672817cfc295a42a3dddcd269f6e09eec39f3c4c5aee4