Malicious PDF — malware analysis report

Static analysis result for SHA-256 36217aebc302502d…

MALICIOUS

PDF

79.7 KB Created: 2021-03-10 14:17:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 57ecc53b7638472617385eedd7254d82 SHA-1: d4c5dc66e73d61e0c3a9928d0f0aef40a34dbe20 SHA-256: 36217aebc302502d1e1ce4f8f9caf5a689f3bf3eabcff1fd46784b3685a79697
134 Risk Score

Malware Insights

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

The PDF contains multiple external URIs and is flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan delivery attempt. The heuristic 'SE_URGENCY_LURE' suggests the document uses deceptive language to prompt user interaction. While no scripts were explicitly extracted, the presence of numerous links and the overall detection profile strongly suggest the PDF is designed to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://mezovuduw.ru/wix?keyword=certified+payroll+professional+exam+secrets+study+guide+reviews PDF link annotation
    • https://cdn.sqhk.co/savadapo/ynSjgjd/nitro_pro_to_word_online.pdfIn PDF document text
    • http://crysety.xyz/wabojosabirogabuworegoluztn8vl.pdfIn PDF document text
    • https://cdn.sqhk.co/kawurefeki/SihiicJ/sector_148_noida_substation.pdfIn PDF document text
    • http://espaceabone.com/information_security_program_plan_templateufe4u.pdfIn PDF document text
    • http://prostotit.site/rudesokesukajofa6pvw0.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/gakufuzojitililokimeni.pdfIn PDF document text
    • http://voicebftyi.com/govinda_namalu_in_telugu_scriptqp9pr.pdfIn PDF document text
    • http://woxijakuzadajew.getenjoyment.net/troy_bilt_4_cycle_string_trimmer_leaking_oil.pdfIn PDF document text
    • http://wovoradomumakil.medianewsonline.com/what_is_creative_abstract_photography.pdfIn PDF document text
    • http://zujadise.scienceontheweb.net/15080894148.pdfIn PDF document text
    • http://retamos.mygamesonline.org/81433074411.pdfIn PDF document text
    • http://rameautbxy.space/bajulebizuth2xz.pdfIn PDF document text
    • http://qqkaxes.xyz/42467490143lv24c.pdfIn PDF document text
    • http://ogranicbio.space/15925487918l7vo1.pdfIn PDF document text
    • http://sutivetowit.mypressonline.com/wises.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/86184783844.pdfIn PDF document text
    • http://prolac.ru/neff_u2acm7hn0b_installation_manual455iv.pdfIn PDF document text
    • http://wuwisometojone.66ghz.com/measuring_weight_worksheet_ks2.pdfIn PDF document text
    • http://nurigoluda.mygamesonline.org/stephen_king_quotes_on_horror.pdfIn PDF document text
    • https://cdn.sqhk.co/solalokazili/h6hfV1e/lozewikapovapopozom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://biwosagamivi.myartsonline.com/vulozibujazumafaba.pdfIn PDF document text
    • http://moxosutemow.onlinewebshop.net/astm_a53_07.pdfIn PDF document text
    • http://zemufobure.rf.gd/greeting_card_mockup_template.pdfIn PDF document text
    • http://rivudokuji.rf.gd/ledekonufelokorezatid.pdfIn PDF document text
    • http://gevitejivojo.rf.gd/sedentarismo_2017.pdfIn PDF document text
    • http://ralivapoked.epizy.com/fur_elise_piano_letter_sheet_music.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_off0000f7f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F3 5700 bytes
SHA-256: fc3269feedc7611c5374bec62f59e2d9a5173b11f9fe45f1974bcfc053117855
font_01_sfnt_off00010b69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B69 10952 bytes
SHA-256: a02ce7a6d2ead56f29e82151157f838de427e045e2d8c1fd12401764178b4a78

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