Malicious PDF — malware analysis report

Static analysis result for SHA-256 97965e104e17c6a2…

MALICIOUS

PDF

78.8 KB Created: 2021-03-11 02:32:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 0218aacc5e17b54174732e9944620515 SHA-1: c9b166dd137f332cba55585baf2cb1820c89f82e SHA-256: 97965e104e17c6a26f8a32063910e88a39f6b69e5af595d5b1bd8b78dcb6448e
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan variant. It contains numerous embedded URLs, many pointing to disposable hosting or link farms, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to search terms, directing users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/award?keyword=abraham+lincoln+history+in+tamil+pdf+download PDF link annotation
    • https://bejutenexej.weebly.com/uploads/1/3/3/9/133997629/tapafojisuroxuzadag.pdfIn PDF document text
    • http://slmit.fun/cucet_previous_year_question_papers3fbt.pdfIn PDF document text
    • http://viwaginuf.iblogger.org/james_patterson_alex_cross_latest_book.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/87124137141.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374024/normal_6033cd2beed83.pdfIn PDF document text
    • http://topcreditreport.info/diy_hidden_gun_cabinet_planskja9w.pdfIn PDF document text
    • http://stalekost.site/interview_writing_format3avbn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412999/normal_5ffe8b29590db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421639/normal_5fff62f3968c2.pdfIn PDF document text
    • https://kepiloxuxamife.weebly.com/uploads/1/3/0/7/130740378/komavawebab.pdfIn PDF document text
    • http://saporik.scienceontheweb.net/kyocera_p2135dn_printer_manual.pdfIn PDF document text
    • http://forecast.bet/jekujeroditabomusesu05cs.pdfIn PDF document text
    • https://kufudazasa.weebly.com/uploads/1/3/4/6/134626120/873394.pdfIn PDF document text
    • https://makumagem.weebly.com/uploads/1/3/4/3/134373862/gavifamotuku.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/14604274698.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375708/normal_60142d4061165.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://muvusibose.rf.gd/xegawukuxagisuz.pdfIn PDF document text
    • http://samanofi.epizy.com/hopkins_belize_travel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/20111733160.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/lifetime_44_impact_portable_adj_height_basketball_hoop_90670.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/why_did_my_logitech_wireless_mouse_stop_working.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/thematic_analysis_example.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_off0000f662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF662 5716 bytes
SHA-256: 319b999286049b166b0f43e8df41d6a81d4d264103af6a0f18e96610036d1f8b
font_01_sfnt_off000109be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109BE 10576 bytes
SHA-256: bc678c9869f3255ff60ca3edb47ddbf74e9eab689d861324b14ffa44d5a0f51b

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