Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b0b8be9acc4673…

MALICIOUS

PDF

59.6 KB Created: 2020-10-15 17:01:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e1d1eb71db7e87fc456a0dc1859a03ed SHA-1: 72cbecf497cb68daf6ef65fe737b67c814b69853 SHA-256: b6b0b8be9acc46735e87cbedbbcf04a5ff4cd8a12d00fd3792631720ae504bad
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/123?keyword=lower+antelope+tour+guide In PDF document text
    • https://site-1039436.mozfiles.com/files/1039436/wps_pixie_dust_android_apk.pdfIn PDF document text
    • https://site-1039342.mozfiles.com/files/1039342/wutijowepibitis.pdfIn PDF document text
    • https://site-1039344.mozfiles.com/files/1039344/poloru.pdfIn PDF document text
    • https://site-1037094.mozfiles.com/files/1037094/17510990788.pdfIn PDF document text
    • https://site-1040000.mozfiles.com/files/1040000/79859418233.pdfIn PDF document text
    • https://site-1036633.mozfiles.com/files/1036633/96052807559.pdfIn PDF document text
    • https://site-1038988.mozfiles.com/files/1038988/titiwilidomufibozadojal.pdfIn PDF document text
    • https://site-1040442.mozfiles.com/files/1040442/pf_form_10c_format.pdfIn PDF document text
    • https://site-1038311.mozfiles.com/files/1038311/91142467179.pdfIn PDF document text
    • https://site-1040509.mozfiles.com/files/1040509/47044114078.pdfIn PDF document text
    • https://site-1038905.mozfiles.com/files/1038905/wokojupizotejedegajizikag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f882e361cedb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_5f87cf6118f55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366325/normal_5f882fab3a6a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5f87890ad27df.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/fubisi.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/gerogewupag-fikupejoku-ratobolut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3e91ebe-a9dd-4575-b5b3-fa53296219c8/13828510313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a144f5a5-2d34-4515-8cf6-f9a73503cf71/3576916203.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05518de8-93fd-4ebb-8c33-d3e03ee9ca96/sofafekotamiwukomedoxi.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_off0000a225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA225 4980 bytes
SHA-256: 00775a38300d4b0d9b44a9f3a408292b798d309131a3a5b36b64a40a971f8bad
font_01_sfnt_off0000b32e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB32E 2052 bytes
SHA-256: bfc0904f0f0d07b2dad5b874710802535660feb5301dd45df0a8c923e4b19bcb
font_02_sfnt_off0000bbe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBE4 10740 bytes
SHA-256: 18e76d12e57f1b6c4d8cdefe58711ab76bdef470f5385619fe5d23e8fc7f4f4e

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