Malicious PDF — malware analysis report

Static analysis result for SHA-256 264cdd92c3b464bf…

MALICIOUS

PDF

73.5 KB Created: 2021-03-24 19:58:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: f91a7b67f50471bc563df2849f4579eb SHA-1: 9da41fa83015a35d36152ecfb9f69ef296282d9b SHA-256: 264cdd92c3b464bf2eb0223f76017dfb96b8b5e98d093ec830e8d8f245106238
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body and embedded URLs suggest a lure to a link farm, likely for phishing or scam purposes. Although no scripts were explicitly extracted, the PDF format can embed JavaScript, and the presence of external URIs points to a potential download or redirection mechanism.

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://bologen.ru/wix?keyword=fortnite+clan+names+not+taken+2020 PDF link annotation
    • https://cdn.sqhk.co/zivuwimavez/hg8r9F5/bhagavad_gita_book_in_tamil.pdfIn PDF document text
    • http://gilitomenuxame.22web.org/72659914181.pdfIn PDF document text
    • http://raxewaponoxiv.mygamesonline.org/how_to_use_ipad_for_teaching.pdfIn PDF document text
    • http://sugoxebojun.getenjoyment.net/raxafowuzemelatu.pdfIn PDF document text
    • http://pijakonojimuw.iblogger.org/51175979864.pdfIn PDF document text
    • https://cdn.sqhk.co/rureroso/gNkJXiR/meteor_storm_2020_movie.pdfIn PDF document text
    • https://fibigator.weebly.com/uploads/1/3/4/3/134313363/dijimoneb.pdfIn PDF document text
    • http://wejedakipitag.iblogger.org/suguwok.pdfIn PDF document text
    • https://cdn.sqhk.co/wodaximewule/hggdieg/zufogesuxaxufu.pdfIn PDF document text
    • https://gupobotinifetex.weebly.com/uploads/1/3/4/3/134338345/wiveb.pdfIn PDF document text
    • http://juvovagesubo.mywebcommunity.org/load_bearing_wall_definition.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuwepapose.epizy.com/64831356060.pdfIn PDF document text
    • http://panexorumilogim.myartsonline.com/best_oral_b_toothbrush_heads_for_braces.pdfIn PDF document text
    • http://wenibeliso.atwebpages.com/the_theory_of_relativity_and_a_priori_knowledge.pdfIn PDF document text
    • http://gigonusotomofi.rf.gd/33626176536.pdfIn PDF document text
    • http://giwofigu.epizy.com/3985477479.pdfIn PDF document text
    • http://suraluw.rf.gd/campaldino_1289_the_battle_that_made_dante.pdfIn PDF document text
    • http://todamabofadufod.epizy.com/lexubesepupod.pdfIn PDF document text
    • http://kotumeberi.rf.gd/ableton_live_9_free_trial.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_off0000e35c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE35C 5236 bytes
SHA-256: e63fe88ab3767c2f11587334c2ba1939d3e81eae937218af66b05640131443a7
font_01_sfnt_off0000f51a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51A 10320 bytes
SHA-256: 37c8ae0305809b90fa6148da294a6e07c0292ac2f93eef21113fbde95149ffd1

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