Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ccecc1154854b9…

MALICIOUS

PDF

44.0 KB Created: 2020-11-05 08:40:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ce421bb00d59cc96638a8d935cf46696 SHA-1: 9d267509adb6e8f89dd006b9a30108a96530a6e5 SHA-256: 84ccecc1154854b9e77b3c6d2699fe26d0aca22fea8d312207f83fa1ed252c31
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://ggtraff.ru/strik?keyword=food+label+worksheet In PDF document text
    • https://luwinititik.weebly.com/uploads/1/3/4/5/134587042/nazubumisemaw.pdfIn PDF document text
    • https://morurotefat.weebly.com/uploads/1/3/4/3/134317018/rutonirir-riwin-kufik-bitojid.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/lujoliwupu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384645/normal_5f911f62f1ef1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387219/normal_5f9cf8b1eb7e9.pdfIn PDF document text
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/bd8235088eb842e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369911/normal_5f974c75bbc1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407788/normal_5fa182d97461f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/goblin_written_language_5e.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/blitz_brigade_hack_apk_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/bacterial_pathogenesis_wilson.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/terinupew.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/krystal_clear_model_637r_filter_pump_assembly.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/asme_journals_free_download.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_off00006c6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6F 5164 bytes
SHA-256: 15ed04d2329794f261087973258d3b96bc82faa62cb23b98d737b6be0f82216c
font_01_sfnt_off00007e0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0A 11020 bytes
SHA-256: 105cf6ca9273513fe6ce810a92d607f3ecfe5d488a26c67bfcad412f10bc6be9

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