Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef2040f575a65f22…

MALICIOUS

PDF

65.1 KB Created: 2021-02-24 04:25:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6af2349f8d2005e7a99768492cdb1726 SHA-1: d2561b1926cdae2c6327347f834544d1cbd0fe47 SHA-256: ef2040f575a65f22837a3ca164a72e7cf45a9a21e6e4bcebe64c67bc36f8726d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://baarspo.ru/wix?keyword=main+and+subordinate+clauses+worksheet+ks1 PDF link annotation
    • https://cdn.sqhk.co/javeduner/j2hemib/somodajokalusi.pdfIn PDF document text
    • http://sijazoge.iblogger.org/rcm_full_form_name.pdfIn PDF document text
    • http://pojemapeva.22web.org/77235520407.pdfIn PDF document text
    • https://cdn.sqhk.co/nalomuxe/Ggejegc/lipato.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370074/normal_5fe06946de9a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421783/normal_60233ae6a9b7e.pdfIn PDF document text
    • http://turekawetareju.iblogger.org/18311205884.pdfIn PDF document text
    • http://meduduwaje.22web.org/android_auto_day_night_mode.pdfIn PDF document text
    • https://cdn.sqhk.co/govazofaj/T63ijid/renadakug.pdfIn PDF document text
    • http://motasabox.22web.org/80045614906.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dapubul.rf.gd/dofe_expedition_assessors_report_example.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/how_long_to_fall_in_deeply_sleep_at_night.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/lagu_5sos_amnesia_matikiri.pdfIn PDF document text
    • http://mowigibimubepi.rf.gd/5648371846.pdfIn PDF document text
    • http://vadawowugozopul.epizy.com/sijagepikes.pdfIn PDF document text
    • http://pukafenofi.epizy.com/letter_from_santa_christmas_morning_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/candida_krusei_tratamiento.pdfIn PDF document text
    • http://nupusadulawux.epizy.com/sample_ballot_for_barangay_election_2018_form.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_off0000c227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC227 5380 bytes
SHA-256: 3b492e778067bf5dcfe8a3862f1719173cc75e493e9ec24d8464fe6a51990f8b
font_01_sfnt_off0000d48c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48C 10164 bytes
SHA-256: 6bcab3681cf122436d6afaeaee1f6571529dfdb1d07b4d67de5b737d7bd7bf57