Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2db20d4fd60e109…

MALICIOUS

PDF

35.3 KB Created: 2020-10-03 20:30:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: dc9d76e818fbf8accfc386ccea804467 SHA-1: 92fedd7518343a5dd26663d783e05852eb6ba7f0 SHA-256: f2db20d4fd60e109f79b48f2d43dcef50fb01e70685ce0ddff2a664fdcf2821f
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=ariston+a33v+dryer+manual In PDF document text
    • https://site-1036695.mozfiles.com/files/1036695/menepowipazitevo.pdfIn PDF document text
    • https://site-1036629.mozfiles.com/files/1036629/82978770509.pdfIn PDF document text
    • https://site-1042502.mozfiles.com/files/1042502/22944648758.pdfIn PDF document text
    • http://files.idyllwildcabins.com/uploads/1/3/0/7/130740217/dojopezeluguwapi.pdfIn PDF document text
    • http://files.autola.me/uploads/1/3/2/3/132302941/ec783e944628fbc.pdfIn PDF document text
    • http://files.gibbsfinancialfitness.com/uploads/1/3/1/8/131871704/vulabuwugagif.pdfIn PDF document text
    • http://nulav.boisedetailing.com/uploads/1/3/0/8/130813831/nokawuluzutabu.pdfIn PDF document text
    • http://bifiwoduf.riverenoauthor.com/uploads/1/3/0/7/130738632/zaxidenaj.pdfIn PDF document text
    • https://site-1038339.mozfiles.com/files/1038339/datakizovaditedowogorun.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/surukesakimapejudosetuzit.pdfIn PDF document text
    • https://site-1039438.mozfiles.com/files/1039438/sebulovegagaw.pdfIn PDF document text
    • https://site-1037125.mozfiles.com/files/1037125/11090505462.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/1/0432/0660/7012/files/duloxizisunoradigus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0797/7889/files/bedside_reading_lamps_amazon.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_off00004d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D23 5284 bytes
SHA-256: 68748133792a06e63be5bd421f0e161583b8780ef5e95813dff66d6aa0915de7
font_01_sfnt_off00005f10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F10 9884 bytes
SHA-256: f06fcaaa5017dadfd1998e487d8ff4961d034ec21d67bc718c748b21b67246a0