Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e26b96fcdcbbdf2…

MALICIOUS

PDF

76.4 KB Created: 2021-01-28 01:32:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 68bf295d8de9caa4e4c055b242192e97 SHA-1: 15ea02dc1f1c287a56014ff283ae4b78d8e4d402 SHA-256: 7e26b96fcdcbbdf2fbda709718e9802e8fc5cb3e7bfd23df627d37097a295006
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including ML and ClamAV, indicating malicious content. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a phishing or malware distribution scheme. The document body, though partially corrupted, contains keywords like 'block strike juego online' which likely serve as lures to attract users to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/wb?keyword=block%20strike%20juego%20online PDF link annotation
    • http://xulonagubalipa.66ghz.com/assistant_commandant_question_paper_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/hg30tjh/17913577508.pdfIn PDF document text
    • http://fofafowazu.66ghz.com/maharshi_telugu_video_songs_hd.pdfIn PDF document text
    • https://ratesikumetu.weebly.com/uploads/1/3/1/1/131163578/megidajatu-xizej-sujipadasuroxud-reteb.pdfIn PDF document text
    • http://leopolds.space/command_conquer_rivals_tm_pvpsa33d.pdfIn PDF document text
    • https://tukuboxux.weebly.com/uploads/1/3/4/5/134510407/2102353.pdfIn PDF document text
    • http://hookup154.space/raju_omlet_restaurant_llc_new_yorkifpmo.pdfIn PDF document text
    • https://tedotedonux.weebly.com/uploads/1/3/0/7/130775879/kovedetodomufavex.pdfIn PDF document text
    • https://sepetumeba.weebly.com/uploads/1/3/4/6/134601334/todirazalom.pdfIn PDF document text
    • http://gufutaca3.xyz/23596947727ks4zc.pdfIn PDF document text
    • http://gadokuzepot.22web.org/away_in_a_manger_music_sheet_piano.pdfIn PDF document text
    • http://fb-ig-copyright.com/92821452960ej8li.pdfIn PDF document text
    • http://lidedapomegila.iblogger.org/appendiceal_mass_adalah.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/suxuzubojut/20254629260.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/57602076884.pdfIn PDF document text
    • http://sufelubunat.epizy.com/jekinawapulaginazexibev.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/business_card_illustrator_template.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/warolamibenewe.pdfIn PDF document text
    • http://darelarara.epizy.com/16841125461.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD480 4944 bytes
SHA-256: 2185673e43b4389ce6ce31998911d3797738a4ee5c6fd5fe5eac467899f28e10
font_01_sfnt_off0000e572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE572 12124 bytes
SHA-256: 849a1f4992e7e6c82dcc44305c418ee43e280e53f3a7b45efd0d170a3defdf06
font_02_sfnt_off00010cf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF9 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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