Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5478b49d2ffc6ef…

MALICIOUS

PDF

44.2 KB Created: 2020-10-14 20:23:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 140f10c18f02fe39570c22827e39c8ba SHA-1: b445de85303444d909317a964d1464af965e1a62 SHA-256: f5478b49d2ffc6ef8c085ad3f75fac46f8bb574335714ce65d3301462156c61b
132 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=google+camera+apk+pc+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f87042be6661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366346/normal_5f8725f942c13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_5f872ffb1db18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5f872f532e7c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f870111e9646.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/difukele.pdfIn PDF document text
    • https://site-1036681.mozfiles.com/files/1036681/52753135399.pdfIn PDF document text
    • https://site-1042725.mozfiles.com/files/1042725/46915358347.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/sulifip_bimewu_wevobami_fivixibileso.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/jogowezokuvaxu.pdfIn PDF document text
    • https://site-1043668.mozfiles.com/files/1043668/udot_traffic_app_android.pdfIn PDF document text
    • https://site-1042679.mozfiles.com/files/1042679/kusuxumewidasuxorele.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/89cfa74e-af97-4d38-8c7f-475a1eb797f9/39753162825.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec01463b-8dc7-45de-bbcb-f3ae08d21b00/sijaxezepidob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab2e5546-3a1a-4aaa-b482-8e4929b97ef4/wigifirenetal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68dfcfc7-40c6-4750-95de-347735a14aa7/36162312828.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5811148-309d-4204-9b3a-22d166028c61/lubiwuv.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C73 5064 bytes
SHA-256: f041975e4d1b8c764d21703e38bc9bca0029143d9e8ad4c85567f815da41da48
font_01_sfnt_off00005da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA3 10080 bytes
SHA-256: 4ea635c10bc49cf5d240dd0a23af7cb0d4974d2e150fabde6fb9fa64a8271c28
font_02_sfnt_off00008057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8057 16164 bytes
SHA-256: f469c5aa689aa4c1965481b78cfaebbf1c3ebdad2306c7067134b7b4aaa0addd
font_03_sfnt_off00009550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9550 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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