Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b30446cdc93df50…

MALICIOUS

PDF

46.7 KB Created: 2020-10-04 02:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: de5ea7f1a57db159e72cfaea61abb2f9 SHA-1: f99d231b00481c94f134638b02d0349027c0ff40 SHA-256: 6b30446cdc93df502b5784d5310e80908151f596ac3e6770df1fa78f2846e329
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/pify?keyword=ffa+fruit+sales+brochure+2019 In PDF document text
    • https://site-1038387.mozfiles.com/files/1038387/82195959790.pdfIn PDF document text
    • https://site-1038940.mozfiles.com/files/1038940/54736138205.pdfIn PDF document text
    • https://site-1040358.mozfiles.com/files/1040358/vuzuje.pdfIn PDF document text
    • http://nijibi.tilbcc.com/uploads/1/3/2/8/132814928/95566948d585304.pdfIn PDF document text
    • http://sezawe.vvsahs.org/uploads/1/3/1/4/131482975/xabadatu_rivad.pdfIn PDF document text
    • https://site-1041491.mozfiles.com/files/1041491/37682786937.pdfIn PDF document text
    • https://site-1043662.mozfiles.com/files/1043662/93395514952.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/995a47fa-2b2e-4364-a893-43100f7f94d0/96046847661.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/638f2429-2d6c-43a2-bf3c-d0a74b36776d/72070377620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/032495ec-e2ed-40cf-a7b6-e7145b3f5d0f/82406532673.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91003bba-c1ad-4529-b615-73f8f4bae842/bowigamakevarisovowumewuj.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FF 5548 bytes
SHA-256: 9e8c7afb7a10c8692d547573eaa55a32dee214ac2ecf91926da31df385faa5ea
font_01_sfnt_off000073d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D6 10704 bytes
SHA-256: e35ab1e029bd007c566f25dbae511f941d2a923bc35d11d2215c40fcf56ed77a
font_02_sfnt_off000098a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98A4 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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