Malicious PDF — malware analysis report

Static analysis result for SHA-256 33c5f8e015202619…

MALICIOUS

PDF

48.9 KB Created: 2020-10-15 03:30:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 05ff92b8cc4102c0e25aee2a8f603839 SHA-1: 2076961e6a440e89dec7a80ddd615c333c987992 SHA-256: 33c5f8e01520261964b3ede89efb9d7908ef08117d51a2e0dafca6c20b92ad98
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/strik?keyword=been+love+together+apk+full In PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/8767144.pdfIn PDF document text
    • https://site-1037828.mozfiles.com/files/1037828/woxiwapux.pdfIn PDF document text
    • https://site-1041777.mozfiles.com/files/1041777/vulopivozuzewutob.pdfIn PDF document text
    • https://site-1039789.mozfiles.com/files/1039789/60335208303.pdfIn PDF document text
    • https://site-1039188.mozfiles.com/files/1039188/demakiwavokulixidetaru.pdfIn PDF document text
    • https://site-1036973.mozfiles.com/files/1036973/88054765724.pdfIn PDF document text
    • https://site-1042602.mozfiles.com/files/1042602/rosedinozibizufuz.pdfIn PDF document text
    • https://site-1043891.mozfiles.com/files/1043891/88164013521.pdfIn PDF document text
    • https://site-1037177.mozfiles.com/files/1037177/26544927782.pdfIn PDF document text
    • https://site-1038974.mozfiles.com/files/1038974/81429755927.pdfIn PDF document text
    • https://site-1038768.mozfiles.com/files/1038768/kuluvogip.pdfIn PDF document text
    • https://site-1036941.mozfiles.com/files/1036941/97635950291.pdfIn PDF document text
    • https://site-1042264.mozfiles.com/files/1042264/43009658778.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/mogosaboxebagax.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/6069273.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/6afe34ca-1729-438c-bf24-6f94ae084ea8/navofamufulupisozojofuze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2a84089-bb76-41b1-909e-6dafe9185884/4445986306.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e6b573d-566b-489a-bf23-9b3321e08222/81600162980.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_off000068e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E0 5156 bytes
SHA-256: e4d3f59dfdef3f3370bcceb5745807194aca49d2b59adb7e3036013c47742540
font_01_sfnt_off00007a75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A75 10744 bytes
SHA-256: 95631d856cf429b9d4736cce5cf7452440d88bf61578de32bed3fcad2e97c6dc
font_02_sfnt_off00009f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F5A 16548 bytes
SHA-256: a82fc85569d58c68b659a905b789160e336a96449df50cc1735cdab7727048b0

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