Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ff5e7af946df54f…

MALICIOUS

PDF

74.8 KB Created: 2021-02-24 17:44:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1f2ece897dd0514aa313a453dcfc44c8 SHA-1: d5b017a10393d0ae37b939e512aa5582c1370f79 SHA-256: 0ff5e7af946df54f0d20a7ca8a23215b7a16aa90d88af72a37e82142fecafe28
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to known malicious redirector infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier and ClamAV also flagged this file as malicious. The primary attack pattern involves luring the user to click on a link, which then redirects them to a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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/123?utm_term=elric+of+melnibone+pictures In PDF document text
    • https://cdn.sqhk.co/wisisatofife/gcggjes/full_steam_staffing_watsonville.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/f4phepT/capsule_wardrobe_autumn_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/zepaginu/iUVVnik/easy_photo_background_change_software.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/iBXhfZx/jaza_credo_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nedabuke/bjeQ5Si/52942611640.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/hiigfid/brocato_s_sandwich_shop_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/gjjbjb8/vukadelaf.pdfIn PDF document text
    • https://cdn.sqhk.co/mojupesonon/ibHwCgc/the_walking_dead_road_to_survival_hacked_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/bofozuto/6pDyxUI/zigzagoon_galarian_form.pdfIn PDF document text
    • https://cdn.sqhk.co/livukigelo/uvjhdid/world_chef_mod_apk_unlimited_gems_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/yhgidvV/formula_f_race_car_price.pdfIn PDF document text
    • https://cdn.sqhk.co/rajemaramiw/bouYjg8/waxesolim.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/jgcIjgJ/12389157618.pdfIn PDF document text
    • https://cdn.sqhk.co/fufigavaki/WihghXV/28242410999.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/vonusirukete/chaplaincy_australia_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/zadanowaxemani.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/netogado.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/6931531773.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/uric_acid_test_sample_report.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_off0000e7eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7EB 5048 bytes
SHA-256: 559cbcdaf485b2ecb9b5ee73b955a14021aedcb16ebaeb4b0f8b4c5040adf6d9
font_01_sfnt_off0000f908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF908 10848 bytes
SHA-256: c3fdb5a5bef8325ac1c554341438e8769eb10a1286660950eebdbf1ecf01a390

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