Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8a488463d24516e…

MALICIOUS

PDF

69.3 KB Created: 2021-01-24 02:44:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 6b25a1965cd270df4a3981ed46104668 SHA-1: 441b30abf5ff20226f904690b973fd7055c2c662 SHA-256: c8a488463d24516e8e75c06bdff77f4d35edcf2bce0e2e407682c818e9712566
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=dragonvale+cheat+codes In PDF document text
    • http://nejamaranidirit.22web.org/calculer_son_poids_idal_formule_de_lorentz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485711/normal_5ff29ceb1cd06.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461219/normal_5fe3da068f3d2.pdfIn PDF document text
    • https://cdn.sqhk.co/togodawexu/fykygee/mob_hitman_movies_on_netflix.pdfIn PDF document text
    • http://gikadoketu.iblogger.org/damages_season_1_episode_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/jojipimuve/Wjfgjfb/benusur.pdfIn PDF document text
    • https://cdn.sqhk.co/diwewiduvaz/iLj4iaW/43946319795.pdfIn PDF document text
    • https://cdn.sqhk.co/nupopobax/hjc5a1w/2415594140.pdfIn PDF document text
    • https://cdn.sqhk.co/podidiwi/igidPgi/galaxy_theatres_boulevard_mall_jobs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wubogijogazerew.epizy.com/82003887478.pdfIn PDF document text
    • http://mogegan.epizy.com/dumig.pdfIn PDF document text
    • http://kifozelig.epizy.com/sebapogikazanewera.pdfIn PDF document text
    • http://beverotunege.epizy.com/antenna_design_report.pdfIn PDF document text
    • http://nupituf.epizy.com/jokodovi.pdfIn PDF document text
    • http://moniladipawi.epizy.com/becoming_a_professional_life_coach_free.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_off0000cc95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC95 5260 bytes
SHA-256: 71ea199744dcfe895059b9d74108a0b250a8c99a4f08ec09ce082601b67ee690
font_01_sfnt_off0000de7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7B 12456 bytes
SHA-256: 8beaa612e498385c40132cd7ae16b9028f3fdae12739fe5781643af50f7821fd