Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b790cc2bfe2277c…

MALICIOUS

PDF

75.0 KB Created: 2021-03-01 01:30:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 05e2b68ce9cbc37dfe1aa57102441e45 SHA-1: 0700ae05a95da482f117bbd75f338bb0921caf2c SHA-256: 3b790cc2bfe2277c2da3eb02aa2c4aece5f3ce4e255a3ffdffc0a28e299a81fe
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://golowaki.ru/wix?keyword=world+cup+free+kicks+unblocked+mills+eagles PDF link annotation
    • https://wasatetokis.weebly.com/uploads/1/3/4/5/134513062/7272951.pdfIn PDF document text
    • https://defiduzumuxel.weebly.com/uploads/1/3/2/6/132682342/sujumo_muvalok_dajizadexuj_kotev.pdfIn PDF document text
    • https://xoburevedevubuv.weebly.com/uploads/1/3/1/3/131380480/xudemudula_jujarimafaresik_kunajuguwijo.pdfIn PDF document text
    • https://bixolajulepu.weebly.com/uploads/1/3/4/7/134746591/5493021.pdfIn PDF document text
    • http://playmarket-online.com/12493605636vvoo8.pdfIn PDF document text
    • https://cdn.sqhk.co/gixeruxa/OjahdYG/airplane_simulator_3d_games_online.pdfIn PDF document text
    • https://tokokurud.weebly.com/uploads/1/3/4/7/134744431/1716752.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/bhjIjeN/drone_shadow_strike_2.pdfIn PDF document text
    • http://help-mediasupport.com/happy_birthday_song_bgm_masstamilanpulbs.pdfIn PDF document text
    • http://rabota-plus.club/roku_xd_2050x_release_date9inib.pdfIn PDF document text
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/xepiguzogeza_motamos.pdfIn PDF document text
    • http://5coupons.info/viwebizc8oky.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fepetixapokurob.myartsonline.com/all_my_sons_moving_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/poduzanulos.pdfIn PDF document text
    • http://benamow.myartsonline.com/acer_laptop_windows_10_price_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/barbie_indian_wedding_dress_up_games.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/99051163069.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/flutter_bottom_sheet_scroll.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_off0000e84b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84B 5692 bytes
SHA-256: a1c1d774065ec610ff953ef76bc546898d699f3cd8df36e2d3a50d371d79c227
font_01_sfnt_off0000fb9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9D 10268 bytes
SHA-256: 42a5fdd752720071a43f5cf3d56c15af8feb13700c865b632fae861bdaf56b53

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