Malicious PDF — malware analysis report

Static analysis result for SHA-256 07c6966c8cf436d8…

MALICIOUS

PDF

84.2 KB Created: 2021-03-30 01:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 5f20cf0cfa609e0de52703b19b87cb0d SHA-1: 5266446e4e0fec8666c96560c9e4d0efac5d3a6a SHA-256: 07c6966c8cf436d876b4226271a859a52eb96c189efca4320564a627fe1cf446
134 Risk Score
Tags
free-cdn-ebook-manual-lure

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 invoice-themed 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 0.9998

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://midufefew.ru/strik?utm_term=documents+required+for+register+marriage+in+chennai PDF link annotation
    • http://kokilubowo.22web.org/how_to_repair_singer_sewing_machine_foot_pedal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393908/normal_600bb834ad27c.pdfIn PDF document text
    • http://mebevevi.mywebcommunity.org/fuvazesubeta.pdfIn PDF document text
    • http://instapriz365.site/bejubodoxfxb32.pdfIn PDF document text
    • http://trokot-online.xyz/my_pillow_mattress_topper_cal_king7xzsp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445534/normal_5ffd98df92078.pdfIn PDF document text
    • http://harkateine.fun/76910628687cfoen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450638/normal_605516cc78c5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422879/normal_5fdd9d9f6edd6.pdfIn PDF document text
    • http://koparikamoze.scienceontheweb.net/38988722529.pdfIn PDF document text
    • http://tells.fun/preposition_worksheets_grade_5xv2hw.pdfIn PDF document text
    • http://cmbmarketing.agency/hp_officejet_pro_8600_plus_scan_to_macn71ee.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/tinezedu/twilight_saga_new_moon_download_in_hindi_480p.pdfIn PDF document text
    • http://ratobewiwigu.atwebpages.com/carmelina_study.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/george_bohlander.pdfIn PDF document text
    • http://dinixebun.epizy.com/catering_contract_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/android_appcompatseekbar_style.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/war_and_peace_book_cover.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_off00010d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D6F 5528 bytes
SHA-256: 5d05a7fafebff0148d223f3eac2a2a04c53c1fdc00657f342f3428888ed04b5a
font_01_sfnt_off0001200c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1200C 10212 bytes
SHA-256: 3ec066871dd195691f9cd294caa4d71386d8137b2cc67ab80eb993b742b1d53d

Open this report in the interactive analyzer, or submit your own file for analysis.