Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c55d1cc9e515fe6…

MALICIOUS

PDF

73.4 KB Created: 2021-03-29 01:14:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da01c01160cb10b6651ee14748e11663 SHA-1: 19040d17bb725d4ba51245d29b70098e3767bff5 SHA-256: 7c55d1cc9e515fe67c6413715198695f9606af95b01c4b54a93813f2d1af8b00
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'resalured.ru', which is a strong indicator of a phishing or malware distribution attempt. The PDF structure itself is also flagged for duplicate object bodies, a common obfuscation technique in malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • 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=bloody+mary+movie+1987
    • http://opticsystem.website/sajegejimiwufubet6yvx.pdf
    • http://firstsecu-paypal.com/kazivapibutogitepwzdct.pdf
    • http://reduslimitalia.site/wudurokerinonih44f1.pdf
    • http://goodik.fun/889991184492bqe6.pdf
    • https://cdn-cms.f-static.net/uploads/4421049/normal_60266bafd0879.pdf
    • http://realwockyc.info/buvoxufifcs82.pdf
    • https://cdn.sqhk.co/tixuniwe/fKgegij/raloxovadan.pdf
    • http://trokot-shopnew.online/new_meme_template_2019p9ubu.pdf
    • https://cdn-cms.f-static.net/uploads/4485821/normal_604221459b714.pdf
    • https://cdn.sqhk.co/vadetegubufo/hjbzJhh/sas_visual_analytics_dashboard_examples.pdf
    • http://simkosa.website/968319963334f4iw.pdf
    • https://cdn.sqhk.co/feripamapuv/6OTNldk/12759281791.pdf
    • http://raicen.com/wigatibuvubiqvfgt.pdf
    • https://cdn.sqhk.co/pajugeluj/cjHOdjd/luwugorifuwumozutolis.pdf
    • http://italystore.pro/osm_scoutlist_2019svuqk.pdf
    • https://cdn.sqhk.co/gazejuruni/ibbKicL/amazon_kindle_fire_hdx.pdf
    • https://cdn.sqhk.co/nodujugebi/bghaCja/merge_shape_option_in_ppt_2010.pdf
    • http://load-bcp.com/60069170661gw0f6.pdf
    • https://cdn.sqhk.co/tivuzofep/jam3jhI/doomsday_survival_list.pdf
    • https://cdn-cms.f-static.net/uploads/4411493/normal_6028f8cdcd93a.pdf
    • https://cdn-cms.f-static.net/uploads/4465703/normal_5fe6de5258e07.pdf
    • https://cdn.sqhk.co/puzadowoke/uijhWCi/843636647.pdf
    • http://tur8osale.site/rekox2vtz7.pdf
    • https://cdn.sqhk.co/sowodopevew/Bgihhgg/kibexonupevusomemima.pdf
    • http://flymoney.net/can_you_watch_big_little_lies_on_amazon_prime_for_freet7vv6.pdf
    • http://abanca-electronica.com/6047667542ue40u.pdf
    • https://cdn-cms.f-static.net/uploads/4419827/normal_60570642483a2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000e12f.bin
297341388cf6c4977c2e4ce84f4dfb7da63a4224b9a682650398eba01fff6d6c
pdf-font-stream PDF embedded font (sfnt) at offset 0xE12F 5484 bytes
font_01_sfnt_off0000f3d5.bin
61be32d2a67e1cfdfef93fb1255a0f5d27e5ce7b0875be5edb55552800f52558
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D5 10768 bytes