Malicious PDF — malware analysis report

Static analysis result for SHA-256 4030092832578b1a…

MALICIOUS

PDF

72.6 KB Created: 2021-03-15 04:30:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 46aee24b874e7974458afa057a83af6f SHA-1: d72f6fcb2db9401ffb65d44749ca5de4839e0de4 SHA-256: 4030092832578b1afccedb6b8ab8d14441574a90a53ee17cd54658dac8decf40
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The 'SE_BROWSER_INSTALL_LURE' heuristic suggests the document's content is designed to trick users into installing malicious browser extensions or updates. Numerous external URIs were extracted, many pointing to disposable hosting, which are likely used to host malicious payloads or redirect to phishing sites. No scripts were extracted from this sample, but the overall pattern strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://jottigo.ru/strik?utm_term=rowenta+handheld+steamer+canada PDF link annotation
    • https://cdn.sqhk.co/gusiloxi/jhhalvG/cyberpunk_2077_city_wallpaper_4k.pdfIn PDF document text
    • http://wodekenizowa.getenjoyment.net/48040631187.pdfIn PDF document text
    • https://cdn.sqhk.co/kovezozeseg/Shcujfc/46770415116.pdfIn PDF document text
    • http://dizititakozazi.mywebcommunity.org/crossword_puzzle_books_for_elderly.pdfIn PDF document text
    • http://cheeronthemove.store/bryant_furnace_codes_34dkqiq.pdfIn PDF document text
    • http://workbykoder.xyz/jejejumkesus.pdfIn PDF document text
    • http://wonnaturila.space/98211076260q7rzn.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/rWJhhHE/bullet_force_download_pc_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459785/normal_60426e24a8fe2.pdfIn PDF document text
    • http://lnstagaram-verifiedbadges-from.com/paradise_lost_book_10vklbk.pdfIn PDF document text
    • http://sifaritube.sportsontheweb.net/defozufevazavijamikolax.pdfIn PDF document text
    • http://kitixukizogutik.mygamesonline.org/that_time_i_got_reincarnated_as_a_slime_light_novel_volume_11_download.pdfIn PDF document text
    • http://usesalle.xyz/newtons_3_laws_of_motion_definitionbzy65.pdfIn PDF document text
    • http://dom-bita.org/real_book_6th_edition_bass_clef4q3k7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463286/normal_6023d270e7b29.pdfIn PDF document text
    • https://cdn.sqhk.co/kezulegol/fLhdkjj/introduction_to_reporter_gene_assays.pdfIn PDF document text
    • http://itfamily.pro/64613844737xp8hn.pdfIn PDF document text
    • http://sandiego-podcasts.com/763602647300491v.pdfIn PDF document text
    • http://zopokujejisolan.getenjoyment.net/46353527405.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/jiheFGt/62630009538.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391921/normal_6003c34bbed38.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6a1e2a5f-c456-4288-b9d5-5378f87870fb.filesusr.com/ugd/076fac_9624fc0e309645fd9a0c21f008422596.pdf?index=trueIn PDF document text
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_a3b63517e0424e469011da0c910b9948.pdf?index=trueIn PDF document text
    • https://4b5f4e46-8b81-4257-bf39-61fc08ba57b0.filesusr.com/ugd/7ea8bb_6904b0f3a06f495bbb94abcd037127b8.pdf?index=trueIn PDF document text
    • https://9e1e9198-0fe7-4103-8084-fdcc6befb8d5.filesusr.com/ugd/2f7815_61868190011a415bac484b819a0c1efb.pdf?index=trueIn PDF document text
    • https://0296ecfc-28ae-4fa5-925c-67a25994cace.filesusr.com/ugd/c88839_03a4afa1dec54013942db66341df7028.pdf?index=trueIn 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_off0000dc58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC58 5276 bytes
SHA-256: 98f0ff19b0ff8af45c7454fbd1e46aca92516f620967f60361e79ef5e0895bba
font_01_sfnt_off0000ee36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE36 11076 bytes
SHA-256: da5bbd93befcc3ddeb793633dd8ba8c1ca3d81ddd163bef43f6035b40db8345a

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