Malicious PDF — malware analysis report

Static analysis result for SHA-256 292401e7a747759b…

MALICIOUS

PDF

70.5 KB Created: 2021-03-10 07:43:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 9063ec2c58c9331a2fdc41cd668846eb SHA-1: 4e0d3d80d59f9bd1bee7e2f9904018f9ae79ba06 SHA-256: 292401e7a747759b262517807d41bae49730768c97602480707911bd8f82a9a9
156 Risk Score

Malware Insights

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

The PDF file, disguised as colouring sheets, contains a large number of external links, many of which point to potentially malicious or spam content. The heuristic PDF_SEO_LINK_FARM indicates a deliberate attempt to create a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://golowaki.ru/123?utm_term=farm+animal+colouring+sheets PDF link annotation
    • http://fesufobototezer.mywebcommunity.org/2013_honda_civic_si_coupe_owners_manual.pdfIn PDF document text
    • http://nukapag.getenjoyment.net/xarimewogileg.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/google_sketchup_material_library_free_download.pdfIn PDF document text
    • http://lobulezinovux.medianewsonline.com/how_to_factory_reset_hp_officejet_4630.pdfIn PDF document text
    • http://bekokax.getenjoyment.net/81452510226.pdfIn PDF document text
    • http://junumidutuzakox.getenjoyment.net/juleximefebedorufubidapil.pdfIn PDF document text
    • http://vuwefedope.sportsontheweb.net/remington_1187_tactical_carrier.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/xugigabitulu/astm_a36_standard.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/beyond_compare_3_key_free.pdfIn PDF document text
    • https://78ff948a-0765-49f5-a22c-0fbe0eba7848.filesusr.com/ugd/888d0b_fead279d96a341c8be19c10609a731aa.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/tata_steel_group_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/papekegofitotunu.pdfIn PDF document text
    • http://tikomiwewo.atwebpages.com/how_to_find_z_score_without_table.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/vozitixotojoxesomato.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/83623306847.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/zukategojikagenoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/cf_auto_root_samsung_j3_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/nasaginunupon.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/67253415513.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/indian_legal_affidavit_format.pdfIn PDF document text
    • https://20996a60-9695-4f45-8fdb-44bdc783da55.filesusr.com/ugd/c57cae_140a85525ca0431a8b318c72240d4216.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/beats_solo_hd_bluetooth.pdfIn PDF document text
    • http://tofujuwo.onlinewebshop.net/64630658106.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/sebutkan_pengertian_akuntansi_sebagai_sistem_informasi.pdfIn PDF document text
    • https://c0cead0d-5248-483d-940e-95cc3acd9bde.filesusr.com/ugd/20d83a_79a02a324bc246d68981dfc138320fad.pdf?index=trueIn PDF document text
    • http://zipemoluligera.myartsonline.com/kalam_cosmological_argument_mohammed_hijab_book.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/wpf_listbox_itemtemplate_horizontal_stretch.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_off0000d6bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6BF 5168 bytes
SHA-256: 0b648eac6130881962152adcb34dabf7679ae4b58815aab46b757b0681547bbb
font_01_sfnt_off0000e824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE824 10756 bytes
SHA-256: c058c35c01c9bdb7a46021e82904dcc2baed7b36afee4a25bcf10b655ebba25c

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