Malicious PDF — malware analysis report

Static analysis result for SHA-256 49ff6013465157e1…

MALICIOUS

PDF

46.9 KB Created: 2020-10-10 23:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 15df2ab3c3a7b5bacac2115074894854 SHA-1: 60017924500ec485bdd579e0263aeb63a850c2f2 SHA-256: 49ff6013465157e1870ec993cbf52a0f323d1f84694c7130c9f209428a36955e
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=complete+gmat+strategy+guide+set+manhattan In PDF document text
    • https://site-1037188.mozfiles.com/files/1037188/53670936465.pdfIn PDF document text
    • https://site-1038772.mozfiles.com/files/1038772/ratafuzuperitibigoretan.pdfIn PDF document text
    • https://site-1041684.mozfiles.com/files/1041684/24463516132.pdfIn PDF document text
    • https://site-1036811.mozfiles.com/files/1036811/37777748193.pdfIn PDF document text
    • https://site-1036807.mozfiles.com/files/1036807/rigiwopinerede.pdfIn PDF document text
    • https://site-1036996.mozfiles.com/files/1036996/votojalesiruwiw.pdfIn PDF document text
    • https://site-1038974.mozfiles.com/files/1038974/17009378812.pdfIn PDF document text
    • https://site-1036835.mozfiles.com/files/1036835/1082601989.pdfIn PDF document text
    • http://files.besedin.org/uploads/1/3/1/3/131383916/f1f68a7d646a.pdfIn PDF document text
    • http://tozoneme.naturalsoaplady.ca/uploads/1/3/0/7/130738546/5dc36ff0cbfb.pdfIn PDF document text
    • http://files.confrontingaging.com/uploads/1/3/1/8/131871673/kizelizut.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/1/0483/4122/1525/files/27573907261.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_off00006b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4A 5380 bytes
SHA-256: 82535dcaef0ae7b41fdd0a6126cfa1a8be858ba434e9d9cdcd9b46722f9d1a7a
font_01_sfnt_off00007d6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6B 10480 bytes
SHA-256: 058efe5631b4e66be26c93721d9768fd8dbf5ca1119456083771d1242634a757
font_02_sfnt_off0000a0be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0BE 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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