Malicious PDF — malware analysis report

Static analysis result for SHA-256 11131ba17e827b2d…

MALICIOUS

PDF

37.5 KB Created: 2020-10-07 22:46:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 35cdf6af166b9a75bf05d27b3456b958 SHA-1: a42244df92e3d050a09285975d446f427316f7ff SHA-256: 11131ba17e827b2d1684b8535ede17c9d12426cd48114dde6d8ce1dbd34585f3
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/pify?keyword=inmotion+e1000+manual In PDF document text
    • http://netigi.bigflatspreschool.com/uploads/1/3/0/7/130738902/2582411.pdfIn PDF document text
    • http://files.statebirdtogo.com/uploads/1/3/0/7/130775108/80bb7.pdfIn PDF document text
    • http://files.danvillerespiratorycenter.com/uploads/1/3/1/3/131398308/kokekamo-bomusetumalug.pdfIn PDF document text
    • https://site-1038806.mozfiles.com/files/1038806/9680273289.pdfIn PDF document text
    • https://site-1042014.mozfiles.com/files/1042014/18739710560.pdfIn PDF document text
    • https://site-1041384.mozfiles.com/files/1041384/82248604738.pdfIn PDF document text
    • https://site-1038739.mozfiles.com/files/1038739/89248540798.pdfIn PDF document text
    • https://site-1036929.mozfiles.com/files/1036929/xovibetejupab.pdfIn PDF document text
    • https://site-1039846.mozfiles.com/files/1039846/pozoxeku.pdfIn PDF document text
    • https://site-1037219.mozfiles.com/files/1037219/24501919422.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/1/0439/6960/9886/files/4_ton_air_conditioner_square_footage.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_off0000568e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x568E 4688 bytes
SHA-256: e0d0a4a1ac173f678151ccdccb76127e1c46b42019f4accc36ed399779f969bf
font_01_sfnt_off0000666e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x666E 10380 bytes
SHA-256: 240848f486da225f57d911a0361e71bf4e467e7477abf7c4731b54bb7926e057