Malicious PDF — malware analysis report

Static analysis result for SHA-256 172f9a38965181bc…

MALICIOUS

PDF

44.7 KB Created: 2020-10-15 04:06:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 747e11784d996ceaa81ae326e3352f8b SHA-1: e2048cc5d68845f3ce4de97259689075a144df7a SHA-256: 172f9a38965181bca089e0e635539c968dba9d2b0b34931e0a6b3d0d609937ac
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=general+knowledge+of+islamiat+in+urdu+pdf In PDF document text
    • https://site-1037903.mozfiles.com/files/1037903/gabaxulol.pdfIn PDF document text
    • https://site-1043283.mozfiles.com/files/1043283/74926270627.pdfIn PDF document text
    • https://site-1042788.mozfiles.com/files/1042788/garawarawa.pdfIn PDF document text
    • https://site-1041489.mozfiles.com/files/1041489/dibalemodovar.pdfIn PDF document text
    • https://site-1040391.mozfiles.com/files/1040391/powawuvi.pdfIn PDF document text
    • https://site-1038514.mozfiles.com/files/1038514/wikufiguziwizotodud.pdfIn PDF document text
    • https://site-1044455.mozfiles.com/files/1044455/22175672365.pdfIn PDF document text
    • https://site-1042603.mozfiles.com/files/1042603/free_printable_coloring_worksheets_for_1st_grade.pdfIn PDF document text
    • https://site-1037103.mozfiles.com/files/1037103/28742576004.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366032/normal_5f871a832b0c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366385/normal_5f877e2bbf62c.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xekena.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3355978.pdfIn PDF document text
    • https://site-1039174.mozfiles.com/files/1039174/29984445732.pdfIn PDF document text
    • https://site-1042879.mozfiles.com/files/1042879/tomaturaso.pdfIn PDF document text
    • https://site-1043842.mozfiles.com/files/1043842/vefabikunuf.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/8593f077-aef7-4cc8-8b4c-10bb7febb890/26008721349.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21857e27-883a-4e3c-955b-11873d6cd8b2/99761482400.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c19ff55-533b-46a5-b53c-0cc6f7217db9/72472457577.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_off00006548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6548 5548 bytes
SHA-256: 9759f621cfe20784368c56dfbea991b0cc2c3f9fa896c6c27fac99529d1dc3a3
font_01_sfnt_off00007835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7835 14300 bytes
SHA-256: f7131495c40d233681b1bd08bd3bbbefad898946ac502be2e4ca2f14f565d674

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