Malicious PDF — malware analysis report

Static analysis result for SHA-256 e72544ec2235ddc4…

MALICIOUS

PDF

69.3 KB Created: 2021-04-22 07:41:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 876eaeefa4b706087c45ec59f7a54cf0 SHA-1: d14f9c0f09eb69ff5e2cdc87794a9f22640df8c1 SHA-256: e72544ec2235ddc497c657cafc186422ce9025d700e295442ce9a0424458e5aa
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be a lure for downloading malware. ClamAV detection and ML classification strongly indicate malicious intent. The presence of multiple suspicious URLs suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/strik?utm_term=ap+biology+enzyme+lab+report
    • http://merovew.xyz/free_anti_virus_for_android_mobile5h9fc.pdf
    • https://cdn-cms.f-static.net/uploads/4388405/normal_60697b6567da4.pdf
    • https://cdn-cms.f-static.net/uploads/4369502/normal_602284eeb806c.pdf
    • https://kitigenuripoduj.weebly.com/uploads/1/3/1/0/131070171/sevobawaba.pdf
    • https://cdn.sqhk.co/pijuvedozuw/hbgfhgL/website_designer_jobs_online.pdf
    • https://tivepikilusu.weebly.com/uploads/1/3/4/7/134759048/tarad-nadupulebe-wofeb.pdf
    • https://sezosuxinowa.weebly.com/uploads/1/3/4/2/134266263/1cc303916ba38.pdf
    • https://cdn.sqhk.co/wabajevebe/iIqiffl/18354016951.pdf
    • https://xasigusuvenazuj.weebly.com/uploads/1/3/0/7/130739755/nupaxewezigakazoro.pdf
    • http://msertis.xyz/supugepasifvc8b6.pdf
    • https://cdn.sqhk.co/gixotagokezu/7gfKFhe/world_cup_1986_argentina_england.pdf
    • https://cdn-cms.f-static.net/uploads/4383802/normal_6065f017144a0.pdf
    • https://cdn-cms.f-static.net/uploads/4417980/normal_6029b35432a81.pdf
    • https://pevaluxuduta.weebly.com/uploads/1/3/4/5/134502983/wopale_talofinibamep.pdf
    • http://eurozone.pro/free_text_structure_worksheets_4th_gradecuvt4.pdf
    • https://cdn.sqhk.co/marixefe/6SKlWhe/camera_icon_disappeared_on_android.pdf
    • http://detonic-romania.website/three_billy_goats_gruff_printablesrvwnj.pdf
    • https://kesegupopu.weebly.com/uploads/1/3/4/1/134131766/a28df12b88.pdf
    • http://afracheat9.xyz/92947672358ipc5j.pdf
    • https://godosofebi.weebly.com/uploads/1/3/4/6/134651625/3a485dc563.pdf
    • http://instapodarok365.site/vesuzuxululefovej68f7r.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_off0000d23f.bin
24d3f1b9b770638fc6f4f679e42fee7c7584b7b0541f40e4e987a5d9f048d23b
pdf-font-stream PDF embedded font (sfnt) at offset 0xD23F 5240 bytes
font_01_sfnt_off0000e40f.bin
86c34385fe5e0ab8aff939c81fb72c4278e10d7247aaa4ec6b8bf74de3086d2b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE40F 10560 bytes