Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eb22159e6c56818…

MALICIOUS

PDF

69.4 KB Created: 2021-03-28 23:40:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fa02f4ac054a90cc7ae0746de08697f SHA-1: ec6b136c8f2f5f0589476380fbe8abcc14ccb71c SHA-256: 1eb22159e6c56818e6608317182e95b77791fa9dbee73c37f54f08ca22ac2cd8
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for link farms or phishing campaigns. The heuristic PDF_SEO_LINK_FARM indicates a large number of external PDF links, suggesting an attempt to drive traffic or distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery via the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/wix?keyword=ninja+cat+unblocked
    • https://cdn.sqhk.co/tunuviju/jIgfmjq/download_ninja_vs_zombies_mod_apk.pdf
    • http://alkostore.xyz/pioneer_mosfet_50wx4_aux_not_working9cpu9.pdf
    • https://cdn.sqhk.co/vukupamita/ijiVje6/69201628505.pdf
    • https://vixubarurumufov.weebly.com/uploads/1/3/1/4/131454397/01214850c8b3067.pdf
    • https://cdn.sqhk.co/tudobele/9hgjgji/halloween_party_ideas_for_adults_at_work.pdf
    • https://siwuxamafovad.weebly.com/uploads/1/3/4/4/134489720/febexofufi_zotixaxutalu_nowivogufi.pdf
    • https://cdn.sqhk.co/jekenilegefe/dhegj1I/83824191971.pdf
    • http://webmastervlad.ru/595427356474ixol.pdf
    • https://cdn.sqhk.co/letiludixo/hiJYiiO/xakepixoxepidorosejipemag.pdf
    • https://nesefutuderixu.weebly.com/uploads/1/3/2/7/132740375/zawowinopulode.pdf
    • https://cdn.sqhk.co/vadetegubufo/vphhDUo/29298192364.pdf
    • https://cdn.sqhk.co/xuwedizisor/wHwhb3e/free_birthday_invitations_templates_online.pdf
    • https://cdn.sqhk.co/sevigexew/8jzhjid/70869362770.pdf
    • http://gimexataga.iblogger.org/major_causes_and_consequences_of_deforestation.pdf
    • https://lisufijefe.weebly.com/uploads/1/3/2/7/132740260/vozun.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lewuli/55333354701.pdf
    • http://vatifijagix.epizy.com/baixar_jogos_android_mod_dinheiro_infinito.pdf
    • https://s3.amazonaws.com/legenapi/handwriting_worksheets_for_free.pdf
    • http://pufawalaxovosi.epizy.com/codycross_answers_group_237_puzzle_3.pdf
    • https://s3.amazonaws.com/jepinebawo/im_mr_white_christmas_song_movie.pdf
    • http://zovimagad.rf.gd/applied_mathematics_2_notes.pdf
    • http://wajalapivibobi.epizy.com/asheron_s_call_spell_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d483.bin
b78e4334c14ea2644b3c2addbe28b4715a9cf536e28551ea4f227e2b9ec67b34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD483 4908 bytes
font_01_sfnt_off0000e54e.bin
f80f6e837a9f06562eab0fbf1076a3cee798e51d7ee242bd76071d27608cc8ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE54E 10312 bytes

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