Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbea29512fb3dfa3…

MALICIOUS

PDF

85.8 KB Created: 2021-08-07 23:07:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: d6226c5f79dfcdf7ec342195efb8e7f6 SHA-1: e9678fd436e1893f513a7b4eacab7ad066157c92 SHA-256: bbea29512fb3dfa3183955f093a3fb13b6746098f587edc38f200efa3605067d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external URIs and links to compromised CMS uploads, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and link farms on disposable hosting indicates an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://allytemp.ru/uplcv?utm_term=ejemplos+de+movimiento+rectil%C3%ADneo+uniformemente+acelerado+en+la+vida+cotidiana PDF link annotation
    • http://www.moyekolodin.com/files/lodalitupajafipopi.pdfIn PDF document text
    • http://doubletroubels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb6abb5cb2---72658372498.pdfIn PDF document text
    • http://flagrant-desir.com/userfiles/file/76164169480.pdfIn PDF document text
    • https://elektrona.cz/files/file/29240948902.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b870a2488---vezokeduwudifenezip.pdfIn PDF document text
    • https://www.kcequipment.com.au/wp-content/plugins/super-forms/uploads/php/files/74f6539116925a3fa0f890f8241608b1/74569893548.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/ninixevub.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/960f16fa1f1cb1617f2c4ee9b514fa71/nisojadujowosukiwiwi.pdfIn PDF document text
    • https://mimpisiluman.com/contents//files/60448302551.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/75b1f859117b23ba2f95d5626470ef52/famusawavusunopufed.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac658f26f89---mawevexosofegalelix.pdfIn PDF document text
    • https://lastcallslc.com/wp-content/plugins/super-forms/uploads/php/files/2291b7120d846561710e7012baf1f7a0/57823048538.pdfIn PDF document text
    • http://randygordonlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/163460890.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/spqnm0lu1tua6e9a70bbf01ct7/mulowizenujegege.pdfIn PDF document text
    • http://czdashan.cn/uploadfile/file/2021062013565673499.pdfIn PDF document text
    • https://penzion-pod-rozhlednou.cz/img/file/gubabemetiwoxajivu.pdfIn PDF document text
    • https://tsafar.ir/basefile/tsafarir/files/pemisififalazokodigufo.pdfIn PDF document text
    • http://bluedevils59.com/clients/862365/File/97928436245.pdfIn PDF document text
    • http://xn--krmer-dnnebacke-1kb72b.de/files/file/defefatizadibu.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/e7db37b94079b2d304765ff55e4ec0b9/86052717716.pdfIn PDF document text
    • http://datavincity.com/uploads/ckfinder/files/megaledutupubujema.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ffe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE9 17168 bytes
SHA-256: 2ce577cae51152b5294fd4cce7f563019a85609f17e502777fed7bacc2157168
font_02_sfnt_off00012b30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B30 11120 bytes
SHA-256: 1af74bbfbf2df4dcb33a60398e60b1fdc1f11bcaa34b55f276eed39c7453d63d

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