Malicious PDF — malware analysis report

Static analysis result for SHA-256 aecc824cf15a0402…

MALICIOUS

PDF

56.1 KB Created: 2020-10-15 06:39:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 77fa52a931cadb27281b553938920df7 SHA-1: ed27bb2a318112466e6fe8e5ae3b7b9a9c357ae2 SHA-256: aecc824cf15a040252cbb54a653445a73c5b8ba2a4df10a22228122a9f539ee0
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/123?keyword=leica+cl+analog+manual In PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/roruj-fegedevovelere-zexomojikazi-rewubujelem.pdfIn PDF document text
    • https://site-1039491.mozfiles.com/files/1039491/95097611484.pdfIn PDF document text
    • https://site-1038798.mozfiles.com/files/1038798/desimikabusadivuzoliz.pdfIn PDF document text
    • https://site-1039789.mozfiles.com/files/1039789/fikufedakuvati.pdfIn PDF document text
    • https://site-1039658.mozfiles.com/files/1039658/70055228394.pdfIn PDF document text
    • https://site-1043295.mozfiles.com/files/1043295/ruxavipiresig.pdfIn PDF document text
    • https://site-1043938.mozfiles.com/files/1043938/51752929358.pdfIn PDF document text
    • https://site-1036981.mozfiles.com/files/1036981/temelujoritatigo.pdfIn PDF document text
    • https://site-1039963.mozfiles.com/files/1039963/wiwame.pdfIn PDF document text
    • https://site-1038733.mozfiles.com/files/1038733/84623581713.pdfIn PDF document text
    • https://site-1038597.mozfiles.com/files/1038597/14672845731.pdfIn PDF document text
    • https://site-1036815.mozfiles.com/files/1036815/65672463069.pdfIn PDF document text
    • https://site-1043123.mozfiles.com/files/1043123/fumokuvelimal.pdfIn PDF document text
    • https://site-1043087.mozfiles.com/files/1043087/57788031009.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/1/0483/8788/3165/files/74326069105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9474/6288/files/terran_units_explained.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1456/9640/files/fumusijunimowuwozogaraj.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_off00008a1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A1B 6148 bytes
SHA-256: 30cc425e520f56745b9f544a83043c10e7a04288a2886360c4420b529d43f6e1
font_01_sfnt_off00009f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F3E 4784 bytes
SHA-256: 2f1e71fe8dc1cd09a816546a8730ebc62ae7918034d5d6460e892fafbd56649e
font_02_sfnt_off0000af73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF73 10400 bytes
SHA-256: 205b3bceaf6d1242a277b9008c4670ea17c1c9639c6ebb411276b44b24ba9ad3