Malicious PDF — malware analysis report

Static analysis result for SHA-256 52dd53423c040fe8…

MALICIOUS

PDF

75.4 KB Created: 2021-03-19 08:16:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 17261fb2d2ca1cb27200408706290e2a SHA-1: b0620c833318f38444acff7201ae0bc20dad5a17 SHA-256: 52dd53423c040fe835ab2432a6cb84ec2ad59ba0fe5853f61d6568d76f67289a
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to disposable hosting, indicating a link farm for SEO manipulation or to distribute malicious content. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The primary malicious URL identified is https://botokaw.ru/wix?keyword=rappelz+red+farm+quest+guide.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://botokaw.ru/wix?keyword=rappelz+red+farm+quest+guide PDF link annotation
    • https://cdn.sqhk.co/liramesot/yjcSjd3/nizanexogoxidirononipaso.pdfIn PDF document text
    • https://cdn.sqhk.co/fijufupuga/2dOgfHQ/92289523907.pdfIn PDF document text
    • https://cdn.sqhk.co/xonarewu/hwgdmig/59692271724.pdfIn PDF document text
    • https://cdn.sqhk.co/vivutazawi/qghania/cluedo_detective_notes_app.pdfIn PDF document text
    • https://cdn.sqhk.co/jakufomego/DifUbgg/zombie_football_player_costume_toddler.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwonesi/WU6lsOy/descargar_pixel_cup_soccer_16_para_pc.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/a869a40b-435d-4be0-b40c-308b0bf5f5c8/oxford_house_lubbock_texas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a74b2fa-9a2f-47f2-acac-3d3fd3390a12/levenunalefutizeta.pdfIn PDF document text
    • https://f3874c2d-c116-49c2-b7b6-9300dc8fc43e.filesusr.com/ugd/b11f6d_0a6fc0c3fdda4d77ab310c6c487cfe6f.pdf?index=trueIn PDF document text
    • http://vezoxonu.epizy.com/venedozufazuzemepelomuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/479aa163-8304-4ad4-b411-cbfb7083c001/lenovo_y500_nvidia_drivers.pdfIn PDF document text
    • https://17673d3b-e5d0-4e0e-8211-f079fadf35f5.filesusr.com/ugd/13ae68_cbec2629360e4aafbc0bbc907ecfbefb.pdf?index=trueIn PDF document text
    • https://50aad03f-9d2a-47e6-be13-abd12f321b17.filesusr.com/ugd/3fd638_342874fd1c084f12bfbb23935a3d7e04.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/40061f76-d8b6-47a3-9662-75d55940fdc4/whirlpool_duet_steam_washer_error_codes.pdfIn PDF document text
    • http://bomesesif.epizy.com/a_r_t_s_ka_full_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e274753-05c9-44d5-9417-3b1d16ab0327/walejefigodovibuxususedap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dac7b26-4eca-4176-8355-2fa6680a56b9/is_lost_in_translation_on_netflix_uk.pdfIn PDF document text
    • http://pagupugizof.epizy.com/tezijezapoxiwejujo.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_off0000e97a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97A 5544 bytes
SHA-256: a0db99080309775d669d3f52cd94ebf545f5e5fccc503ca561eaf4d551331f80
font_01_sfnt_off0000fc42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC42 10512 bytes
SHA-256: ca4eaeb73cc7b627a18cd4768fac912ddaac317b368a16cd3986f57426421e1e

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