Malicious PDF — malware analysis report

Static analysis result for SHA-256 97a90bee5074fdc8…

MALICIOUS

PDF

72.4 KB Created: 2021-02-28 13:31:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ba32d976e760dc9c45e6262eebedfa45 SHA-1: 4df2073b603ed12ebccd053d3b9d20b9e38b3f7e SHA-256: 97a90bee5074fdc8ed7423db3f414f0ee795b2d33cf958c40a4bdbb6295bd315
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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.
  • 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://jottigo.ru/award?keyword=how+to+be+a+bawse+book+online PDF link annotation
    • https://cdn.sqhk.co/kufomopinu/5ibM0gh/10238137212.pdfIn PDF document text
    • http://qqkaxes.xyz/21481475270a937w.pdfIn PDF document text
    • http://mmamba.ru/milukejuregeramogemoj812jd.pdfIn PDF document text
    • http://gobigs.space/kurtlar_vadisi_pusu_memati_mzikleri_indirhg1d6.pdfIn PDF document text
    • http://themarkuzmusic.com/2826966536ui8vd.pdfIn PDF document text
    • https://cdn.sqhk.co/soxosovave/d2iQgfv/second_hand_clothes_app_canada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411717/normal_601b1f45d290d.pdfIn PDF document text
    • http://betmoy57.com/1693287873516z85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489969/normal_6033c38b0bf5b.pdfIn PDF document text
    • http://smartbright.club/rain_bird_esp-6tm_manual_startv0eo7.pdfIn PDF document text
    • http://frut-tree.site/92739479691g87w8.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/B0id7X5/buxere.pdfIn PDF document text
    • http://neyroskakalka.site/music_ringtones_teluguy2iet.pdfIn PDF document text
    • https://cdn.sqhk.co/xogedusov/gg1J4ib/club_america_dream_league_soccer_2020.pdfIn PDF document text
    • http://privateguardingserviceagainstdanger.site/14744864954oume.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://noxudovo.rf.gd/25732399687.pdfIn PDF document text
    • http://pomukipokap.epizy.com/54041701061.pdfIn PDF document text
    • http://ligulukeril.epizy.com/bulepodavutetagu.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_off0000e0f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F2 4840 bytes
SHA-256: 514355b70061fe60133607cf238b9974c8d6cda30803b2589c6beaae73dd9647
font_01_sfnt_off0000f18a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18A 10280 bytes
SHA-256: 42e507dea87f2106df5f06e61430a05e93825b24bd75aad6d78324e9056d334e