Malicious PDF — malware analysis report

Static analysis result for SHA-256 14fc6a55bd8532ee…

MALICIOUS

PDF

48.4 KB Created: 2020-10-29 01:51:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c48c9ad38180c22dcc09882afe27d607 SHA-1: 906920b16a889ddc692918e6c99c59af6126e994 SHA-256: 14fc6a55bd8532eeb879aa5fa457bb2196577d0d576b7278c5f216932fe9cfc4
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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 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.
  • 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/pify?keyword=essentials+minecraft+plugin+commands In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367007/normal_5f88a41334006.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368964/normal_5f89823909d8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_5f9245e8eec54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379483/normal_5f96a5d6a5372.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366063/normal_5f8bc6432433e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381539/normal_5f925f90a3db5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373998/normal_5f8e8a72b9fad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370284/normal_5f939d36c455d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f900b99e891c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411701/normal_5f980a5e33077.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376358/normal_5f8b0ad8a6344.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393626/normal_5f994965cb5a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385011/normal_5f8fa9df6882f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367290/normal_5f8d0a866b580.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3966/9403/files/larumutozaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/algebra_1_eoc_practice_worksheets_texas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5940/7765/files/xewuniwagitusimuxoxitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/1689/1797/files/45291684735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/9174/2886/files/disney_movies_based_on_shakespeare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9872/5275/files/zuxuxodog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7253/4166/files/wifi_hacking_apps_for_android_no_root.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7376/3496/files/who_is_that_girl_i_see_meme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1417/4900/files/predicting_precipitation_reactions_worksheet_answers_regents_chemistry.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B96 5432 bytes
SHA-256: b8594a86225e29cc16a0a34c58398b665759d04d868429ae96ad34f5120e7957
font_01_sfnt_off00008dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFD 11716 bytes
SHA-256: eea6a994997ba057ddc463554763103f1624a4daf7d9b4476983ab82e86894fe

Open this report in the interactive analyzer, or submit your own file for analysis.