Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5854182cd7502a3…

MALICIOUS

PDF

75.7 KB Created: 2021-03-13 18:14:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: be012c18d2d03dea0c10eb158df99220 SHA-1: b746d0547dc9c2aaba0ca569b960fbeb53e298b0 SHA-256: d5854182cd7502a359cc21ea40db7d6cdb2803e03b7c5f0a8061590e3dfd4ea7
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including brand-impersonation credential phishing and ML classification. It contains numerous external URIs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The presence of embedded URLs and the overall structure indicate a phishing attempt, likely to steal eBay credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://xososikanezav.weebly.com/uploads/1/3/4/8/134892973/ririxo_jipewofuxixar.pdf.
  • 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://vilenefex.ru/strik?utm_term=john+deere+gator+rsx+850i+service+manual PDF link annotation
    • https://xososikanezav.weebly.com/uploads/1/3/4/8/134892973/ririxo_jipewofuxixar.pdfIn PDF document text
    • http://setokanekema.mygamesonline.org/kandungan_gizi_belimbing_wuluh.pdfIn PDF document text
    • http://richmaya.site/toilet_running_very_slowlywbzfz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413573/normal_5ff48cc2c2fd2.pdfIn PDF document text
    • https://maxuvejalova.weebly.com/uploads/1/3/4/2/134265339/9696957.pdfIn PDF document text
    • http://tdsevsvet.ru/97472722162feagh.pdfIn PDF document text
    • https://supadebev.weebly.com/uploads/1/3/2/7/132712355/xiwilenipowomako.pdfIn PDF document text
    • http://flymoney.net/inocencia_interrumpida_libro8pdjx.pdfIn PDF document text
    • http://bugiwuxad.medianewsonline.com/xezogosagiwepebemogigod.pdfIn PDF document text
    • https://pijetupuz.weebly.com/uploads/1/3/4/3/134351396/2810821.pdfIn PDF document text
    • http://gejekixevase.22web.org/34857558835.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/xoruvixise.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473035/normal_6040fe77c5eb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394062/normal_604113cf2751e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427828/normal_5fe9156236f72.pdfIn PDF document text
    • http://dumubemajizukov.medianewsonline.com/can_i_upload_my_dna_from_myheritage_to_23andme.pdfIn PDF document text
    • https://voloxamofe.weebly.com/uploads/1/3/0/8/130874475/c1faecb3648a49.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://danidarexixuw.epizy.com/fewukegejokata.pdfIn PDF document text
    • http://vuxubeso.rf.gd/rujefejikesobipikepu.pdfIn PDF document text
    • http://molujafit.atwebpages.com/pinagafubenapasaduvinel.pdfIn PDF document text
    • http://noxifepa.rf.gd/fire_accident_investigation_report_sample.pdfIn PDF document text
    • http://ruzisir.epizy.com/how_many_btus_is_a_22_kw_generator.pdfIn PDF document text
    • http://bovumemudij.rf.gd/ashworth_college_english_composition_1_assignment_6.pdfIn PDF document text
    • http://gabigirinekib.rf.gd/3d_video_wallpaper_for_pc.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_off0000e5b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B6 5932 bytes
SHA-256: 5f9f31bdba33fa878e1064aa0b70752b72499a37137c49e3df3de613e73a2ef3
font_01_sfnt_off0000f9c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C3 11644 bytes
SHA-256: 88b1a175a3ad40eb52bce3812b5b430f5823b15c8d08fce115c2913af81d5114

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