Malicious PDF — malware analysis report

Static analysis result for SHA-256 b545229d6884124a…

MALICIOUS

PDF

74.2 KB Created: 2021-02-22 13:41:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e4db01db78c956254c0b3619f5bcd4f2 SHA-1: 61023ef8c050eed520d2ca7cc3bafedd75ee57a0 SHA-256: b545229d6884124a25a1762f7379f58fe4f501a1034278e0f9d0d1b4e0e67bf5
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are flagged as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains a search query related to a specific product, suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://bologen.ru/123?utm_term=logitech+k800+battery+not+charging PDF link annotation
    • https://cdn.sqhk.co/rijomawonuj/iaUiaHl/59015443864.pdfIn PDF document text
    • http://twirlini.com/lizukugalesazenelckt7.pdfIn PDF document text
    • http://goloszauniver.fun/98141044759e2lq1.pdfIn PDF document text
    • https://cdn.sqhk.co/bobavijiwoba/gdWoYig/xoruxavifas.pdfIn PDF document text
    • http://cosmosqrab.online/word_search_game_learn_englishrkqlr.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/iijfhjl/ropoxeremafis.pdfIn PDF document text
    • https://cdn.sqhk.co/bawusipa/hhb1FsJ/best_free_offline_gps_app_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/gisatajofo/Fjaig4z/sukuxumebezitupirilubam.pdfIn PDF document text
    • http://ighelpcenter.xyz/xibujatazafibuvomojegadiz5dzh.pdfIn PDF document text
    • http://trastqort.online/php_simple_website_source_codeedl9e.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/xiijeij/xeroraroxitev.pdfIn PDF document text
    • http://auth02mobility.com/80772048479dp03h.pdfIn PDF document text
    • http://vas-rem.ru/zopirupowupexaf9f13.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://labireninofut.epizy.com/fusuwuzawotugivorezo.pdfIn PDF document text
    • http://pejibuturu.epizy.com/brother_sentiment_whatsapp_status.pdfIn PDF document text
    • http://tuxexagixib.rf.gd/84453076441.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D8 6440 bytes
SHA-256: 629123bfde0685c5f69bbdd27ec008bde0224d5c30af1dabb990f6ee33ea778e
font_01_sfnt_off0000e2cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CC 5436 bytes
SHA-256: 277de34df9c955ff26e77bf61f2306035db1d64c3372ec5104b19c7a87ac21c3
font_02_sfnt_off0000f555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF555 11176 bytes
SHA-256: 2497305bfcd7c08031ebf349962ced1ec23ca55e8597c298a437aed293f85eda

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