Malicious PDF — malware analysis report

Static analysis result for SHA-256 78f2e8a1c1d1ca23…

MALICIOUS

PDF

47.2 KB Created: 2020-10-15 17:43:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1b241fcfabd63063ad825330f2ae1758 SHA-1: 35877e6fe3a1ee115c1c999ab8ce6b0ffe39ef17 SHA-256: 78f2e8a1c1d1ca23beb0d888c2394ffc4a1b1519fa49fca43747d615b0a8b09e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=polar+start+car+starter+manual In PDF document text
    • https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/lazeb.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/xojajuv-mitegejitokuxig.pdfIn PDF document text
    • https://sakuvida.weebly.com/uploads/1/3/0/7/130775714/bazesatoba-kanoj-ronagagekixik.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/9742380.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f878cb4f1cf4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367019/normal_5f872b5e692a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366305/normal_5f871c31f0533.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f870d9f92101.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366385/normal_5f872223dd312.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369143/normal_5f87a432682a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f879fd82734c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f870ab86507c.pdfIn PDF document text
    • https://site-1036684.mozfiles.com/files/1036684/gagixepuxoxusalujex.pdfIn PDF document text
    • https://site-1039566.mozfiles.com/files/1039566/dibemakozorurezinejot.pdfIn PDF document text
    • https://site-1048221.mozfiles.com/files/1048221/23318514753.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://uploads.strikinglycdn.com/files/349b517a-a5ec-4930-88b7-5ac481208119/98420774721.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96e5be50-a2cf-4321-8030-1611601637e9/32092435146.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3ef905a-ed40-4eb1-9bf3-2d3d16f651ad/61912274406.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d51b25f-295e-47be-907b-3646d72a7628/sesaxefivuzusaxapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7224/4900/files/watch_brave_online_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/fossils_worksheet_middle_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3060/8573/files/qt_creator_android_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/3701/0331/files/pokemon_go_beta_download_ios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5689/4630/files/cinema_4k_apk.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_off00006f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F82 4780 bytes
SHA-256: 1085ecb4759a9dadaccb80bb41ba9ddecc33ee0dd160f9c575c32a5d7ca04f5f
font_01_sfnt_off00007f9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9B 9724 bytes
SHA-256: 7317e982468fa140a7d85dea4c888682e1169298a7bfc1c66d8fe8e0a64d7384
font_02_sfnt_off0000a0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0F4 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176