Malicious PDF — malware analysis report

Static analysis result for SHA-256 d674414dbf90a4bb…

MALICIOUS

PDF

42.5 KB Created: 2020-10-29 09:48:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 7e4bd50330fe8e857ac84f2a46d53cf5 SHA-1: 1b5491943fcd4b87889f9450c2aa69796ea19231 SHA-256: d674414dbf90a4bb325d660aba2bba7b7ead6254d12c4a86e00ac9ce9f0e0038
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 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.
  • 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://cctraff.ru/strik?keyword=c+dan+joyner+property+management In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369508/normal_5f954c3bdce24.pdfIn PDF document text
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/lewoxo-jiwagowi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_5f879b70d3b99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5f875c6449dc7.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/9298fbba.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/tamabalijizoz.pdfIn PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/1379092.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401546/normal_5f91547db29a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411922/normal_5f99f336b1835.pdfIn PDF document text
    • https://lenimupet.weebly.com/uploads/1/3/4/0/134013040/9110187098c926.pdfIn PDF document text
    • https://vivazezege.weebly.com/uploads/1/3/4/0/134041722/28df8333638f.pdfIn PDF document text
    • https://wazajodowefode.weebly.com/uploads/1/3/4/0/134017502/e64293fceea.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/nixozag.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/5b8a6f0d-25fd-456b-8ca4-e49d8622813b/xetaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1130/8702/files/action_words_worksheet_for_nursery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0de522c-eb28-4868-8755-4589d813b84d/20051229911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d6ad17a-f57c-4178-8f04-ea6010aae5e5/tajepefoxasapupi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83283c29-cb24-4bfb-be40-4d44541de129/76620242018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9654/8530/files/7575917568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0878/9150/files/fifa_14_mod_commentary_download_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61b35ba4-d4eb-4f60-b9ce-7c9652d2c1ee/15421502077.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ef6470f-c22c-4acd-af05-78d7610688ab/13091576810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc9c41e3-c98c-494b-9ec5-72d80d498b2f/sosesuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/4300/4826/files/ib_visual_art_comparative_study_criteria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7697/4747/files/liwujiwidozuwurofukubikev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9769f48f-206e-475a-ace9-8f4127860fd7/70507405446.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64ae9ab6-6367-4ee2-a897-a07a449d618b/guwag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fabcccc-66fe-4182-b431-91b564a62f01/pevub.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57C9 5008 bytes
SHA-256: f82103cabae048ca6eddb83cb408bd2294b439fa0df51a08eb5b26dbfce639e1
font_01_sfnt_off000068d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D0 10300 bytes
SHA-256: ee3bbc70155b6dd1a45ee1210dfa570e51e7ddb85600a36feefa25de74990436
font_02_sfnt_off00008bce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCE 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176