Malicious PDF — malware analysis report

Static analysis result for SHA-256 24ebb1b8d087d094…

MALICIOUS

PDF

112.6 KB Created: 2021-04-07 10:48:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e5faa6b23c8d8173188a12b147fc7665 SHA-1: 700111831e4968f0ca5a2234e6a6235268e2af04 SHA-256: 24ebb1b8d087d094dd68d39274a059d4b3d7c66c0ba7273f5db2514d0a69adc3
134 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/strik?utm_term=dirk+gently%2527s+holistic+detective+agency+full+movie PDF link annotation
    • https://cdn.sqhk.co/dutaxato/yTjajjT/zafudedipoxilemifinizod.pdfIn PDF document text
    • https://cdn.sqhk.co/butuxolevu/sBhjjaB/rumble_movie_poster.pdfIn PDF document text
    • http://sopisafexuj.sportsontheweb.net/how_does_an_llc_get_paid.pdfIn PDF document text
    • http://faceit.su/rirazamavukuwoklyyob.pdfIn PDF document text
    • http://saripituxupagek.sportsontheweb.net/traduction_fichier_anglais_franais_en_ligne_gratuit.pdfIn PDF document text
    • http://vovality.club/vofopoxegakinaruwebaseuy1ac.pdfIn PDF document text
    • https://pemolopudamas.weebly.com/uploads/1/3/4/7/134753943/22db4045.pdfIn PDF document text
    • http://timecodes.net/spanish_numbers_worksheet_answersh7udu.pdfIn PDF document text
    • http://9gusevshop.website/jenobirawasalaguy4wpv.pdfIn PDF document text
    • https://cdn.sqhk.co/xubupigegi/ehejjqz/nopebinatevorajow.pdfIn PDF document text
    • https://nisazixipa.weebly.com/uploads/1/3/0/7/130775104/69f95.pdfIn PDF document text
    • http://pumba-timon.space/msi_h81m-p33_ram_supportkv17k.pdfIn PDF document text
    • http://bupetud.xyz/raymond_electric_pallet_jack_wheel_replacementc35j2.pdfIn PDF document text
    • http://newberginvestmentproperty.com/vovebakeperowuviwodiw2a94b.pdfIn PDF document text
    • https://monaxakapivelor.weebly.com/uploads/1/3/1/1/131164425/tadogolemurakewoxej.pdfIn PDF document text
    • https://cdn.sqhk.co/xolanikipiz/gAaYnZz/71848742169.pdfIn PDF document text
    • http://getyourscore.info/xuwejipotidae9xbb.pdfIn PDF document text
    • http://mastericy-chistoty.ru/215101744588gcnc.pdfIn PDF document text
    • http://xegisepereti.mygamesonline.org/dosajuxegalifetus.pdfIn PDF document text
    • http://tokio-2020.fun/radutewonem959oz.pdfIn PDF document text
    • https://rinilevewabidu.weebly.com/uploads/1/3/1/3/131382630/1953833.pdfIn PDF document text
    • http://lukiduxipapep.mywebcommunity.org/cours_appareil_gnital_masculin.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/iaDjf0I/vesujikavutefaruv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/ap_lab_2_enzyme_catalysis_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/zokiwe.pdfIn PDF document text
    • http://wulibazosuxib.onlinewebshop.net/what_is_a_major_difference_between_descriptive_ethics_and_normative_ethics.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/gestational_diabetes_acog_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/51424129564.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_off00017890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17890 5696 bytes
SHA-256: 85cf93b6ca91d3cdc7396afbcfcfc5051ba1f10ed8e5a2fad60b4b24a9a0b407
font_01_sfnt_off00018bf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18BF5 12040 bytes
SHA-256: 1a1e9507c72e7640e39c206094078dff6b851fb1a89b496bede5e1a88761a716

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