Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfce5d308b5cb6db…

MALICIOUS

PDF

79.4 KB Created: 2021-04-01 00:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 20eea8bd5d0c0bb0cd09f68abe4c401f SHA-1: a381d885f00b5938d19b5a25da03ccf68b450433 SHA-256: cfce5d308b5cb6db81c4dcee6a4b37190db264ffd5508d716d4e89f8bc85c71e
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are likely part of a link farm designed to deceive search engines and users. The primary malicious URL, 'https://baarspo.ru/strik?utm_term=dyson+dc58+problems', suggests a phishing or scam attempt disguised as search results. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious intent, likely to redirect users to harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://baarspo.ru/strik?utm_term=dyson+dc58+problems PDF link annotation
    • https://xoxopurotawasuj.weebly.com/uploads/1/3/4/6/134651309/fatobepevu_tavagobepiz.pdfIn PDF document text
    • https://cdn.sqhk.co/wovupeni/cQeijnQ/tirobiwijejepagoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450511/normal_604cd842a17db.pdfIn PDF document text
    • https://rixowumunek.weebly.com/uploads/1/3/5/3/135330445/laluzalodivejebosa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462344/normal_603105bd7d90a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402032/normal_60249ca150a2f.pdfIn PDF document text
    • https://cdn.sqhk.co/raxuzuvuluf/pzj8qgj/jinodasagarovasujoket.pdfIn PDF document text
    • https://pivufuzonopovi.weebly.com/uploads/1/3/4/5/134588588/bezoligezoda-wipokajaz-turunuwimusu-vilata.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/jijegdO/best_hill_country_road_trip.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwaseja/jjgejig/rorixabofa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418973/normal_603ee319ad122.pdfIn PDF document text
    • https://cdn.sqhk.co/dijabidasu/icXllii/rc_racer_game_online.pdfIn PDF document text
    • https://peturenu.weebly.com/uploads/1/3/4/4/134401199/3c3d49dbf7727.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450511/normal_604cd866d0046.pdfIn PDF document text
    • https://mubujibazakob.weebly.com/uploads/1/3/3/9/133986275/562f7204a.pdfIn PDF document text
    • https://cdn.sqhk.co/xazururoxe/zwpXged/21074916156.pdfIn PDF document text
    • https://cdn.sqhk.co/fakupavod/JGhfidP/puvazaz.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/guvovigo/gba_pro_all_games_emulator_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/epidemiologi_anemia_megaloblastik.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/arbily_t8_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/john_deere_js63_year_made.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/94877726119.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_off0000f8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8CD 5568 bytes
SHA-256: 5123d0b40ca761b402624cb016ffd0f093122589bc51d78c006e3d4096d87621
font_01_sfnt_off00010bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB3 10724 bytes
SHA-256: 1d0ffceaa670f0c0c69e1b9b4e5ab6cabe0525d4dd33a224279ef63f14f10e2a

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