Malicious PDF — malware analysis report

Static analysis result for SHA-256 3003667ed2c127d9…

MALICIOUS

PDF

72.7 KB Created: 2021-02-15 23:49:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 54658816eb22ddd79270d6cd9ffc9c1b SHA-1: 271154acbdbf2692f35559ff40507891d207e06a SHA-256: 3003667ed2c127d9debb9eceb30c27e382cb4684d65404261137f0ac7b53d8f9
184 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and a machine learning classifier. It contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The document's structure suggests it's designed as a link farm on disposable hosting, likely to facilitate phishing or distribute further malware. No scripts were extracted, but the presence of embedded URLs and the malicious redirector link are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/wix?keyword=swtor+companion+customization+risha In PDF document text
    • https://fiwarurebel.weebly.com/uploads/1/3/2/8/132814972/bavomawirebo.pdfIn PDF document text
    • https://tunikasas.weebly.com/uploads/1/3/1/4/131438809/wonazuguvajurejalula.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379029/normal_5fcc98f724ab8.pdfIn PDF document text
    • https://gimimelaxagoke.weebly.com/uploads/1/3/2/7/132740951/8a4712.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/k7FggdC/zemorofalijafosinojafi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389793/normal_5ffd072ee1750.pdfIn PDF document text
    • https://cdn.sqhk.co/delojiwuguj/5hebjio/weapon_gun_builder_3d_simulator_mod_apk_download.pdfIn PDF document text
    • https://xugoxokolo.weebly.com/uploads/1/3/5/3/135392162/kijizakoredesizu.pdfIn PDF document text
    • https://cdn.sqhk.co/zerurukoraju/kjgjhgd/tap_tap_apk_pubg_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/zafowavo/p8zigig/57231102751.pdfIn PDF document text
    • https://cdn.sqhk.co/muluxodipoto/2hajeic/best_granny_square_pattern_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446401/normal_602a444fe6324.pdfIn PDF document text
    • http://dijawobal.iblogger.org/favok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415782/normal_601e4af5b8a1b.pdfIn PDF document text
    • http://sojuvofud.22web.org/pefaribibopejegedujebe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366399/normal_5fc796e819080.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/jukoxisojow/jiwezewobiwitiwogekaza.pdfIn PDF document text
    • http://dazesokagevak.rf.gd/lizajefafareduzebu.pdfIn PDF document text
    • http://fetufebutegiv.rf.gd/wuxofelup.pdfIn PDF document text
    • http://pulijivugis.epizy.com/clash_of_clans_windows_8.pdfIn PDF document text
    • http://bikaxubu.rf.gd/rowdy_baby_hd_video_free.pdfIn PDF document text
    • http://fojigexojapox.rf.gd/blender_photo_editor_app.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_off0000d396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD396 5384 bytes
SHA-256: 1f94498d0666813424363a0aeef19abeaac9a8ee9f88e6342c6a9b0a7f84754f
font_01_sfnt_off0000e5d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D5 15416 bytes
SHA-256: dea69ae4c3ccb2f74a4017ac31f6b33bdc0ca7ffb36ee0a81cca371cc3d62678

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