Malicious PDF — malware analysis report

Static analysis result for SHA-256 3505d398aab846dc…

MALICIOUS

PDF

92.5 KB Created: 2021-02-20 05:31:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 068417492bcbfef9f4caf2c201759886 SHA-1: aed41051d0758db16a647457e3f8d2a1f486037e SHA-256: 3505d398aab846dcde6d0c73f162b310e5044aff47fab71e8d9de40b29d17145
186 Risk Score

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 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.
  • 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://jacksth.ru/aws?utm_term=que+es+un+manual+de+organizaci%25C3%25B3n+y+procedimientos PDF link annotation
    • https://cdn.sqhk.co/pifajaloro/Zhbibgf/icloud_photos_do_not_sync_to_mac.pdfIn PDF document text
    • https://gamepasak.weebly.com/uploads/1/3/4/1/134109087/1930166.pdfIn PDF document text
    • http://modebedunizux.iblogger.org/gejusodazeme.pdfIn PDF document text
    • https://cdn.sqhk.co/vameduvide/jgicrjf/war_commander_rogue_assault.pdfIn PDF document text
    • https://lezuzanufebaj.weebly.com/uploads/1/3/4/8/134873312/latenaj_xopuratofidi_tavuw.pdfIn PDF document text
    • https://tisegibak.weebly.com/uploads/1/3/1/3/131380339/gumazivaxidixo_mubekiv.pdfIn PDF document text
    • http://domainlimax.xyz/arrl_band_plan_chart7lgl5.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/cqUGpHS/49277653010.pdfIn PDF document text
    • https://cdn.sqhk.co/tupujokuz/miijhje/nujalexitan.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/gBdGUDc/archery_jungle_hunting_3d_apk.pdfIn PDF document text
    • http://rekabiwuxu.22web.org/17944220826.pdfIn PDF document text
    • http://pevojatinolotej.22web.org/glossaries_in_report_latex.pdfIn PDF document text
    • https://bebilakag.weebly.com/uploads/1/3/0/7/130776425/6130812.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zolibexusago.epizy.com/snark_tuners_review.pdfIn PDF document text
    • http://lapojuvide.epizy.com/windows_10_pro_64_bit_1903.pdfIn PDF document text
    • http://babijegogaluz.epizy.com/15225882464.pdfIn PDF document text
    • http://jotigosi.epizy.com/75731075579.pdfIn PDF document text
    • http://vijanemafe.rf.gd/android_box_for_sale_calgary.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_off0001286b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1286B 5744 bytes
SHA-256: f71740278eed7ef8b2fcfe0467ec4f0db003e64a277045fdd96187498c8f357c
font_01_sfnt_off00013ba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BA7 12256 bytes
SHA-256: 4adf613c8c64898965f52579ab103c29838a54b0b8a6345bdf25e817eee86058