Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef0ff8711211d1c7…

MALICIOUS

PDF

71.8 KB Created: 2021-03-06 23:39:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 368685531968de41c821401e9aed10b3 SHA-1: 6b5e41e5ad055c7640de409fd47a455daf33f2c5 SHA-256: ef0ff8711211d1c76ed2bab954a06b0f8d77aa3a3fb6c4d5dd4829d2c7d30fee
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://bologen.ru/wix?keyword=descargar+apk+de+facebook+gratis PDF link annotation
    • http://healsmall.space/xifanugosedevokixefupoxunzdjn2.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/8087cf220.pdfIn PDF document text
    • https://gadetuzajuvi.weebly.com/uploads/1/3/4/8/134850054/kodakesiwenezuf.pdfIn PDF document text
    • http://rusakova.space/21437622347youw1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389080/normal_600f034788f19.pdfIn PDF document text
    • http://zumbayuliya.online/linux_basic_commands_tutorial_pointjpkme.pdfIn PDF document text
    • https://vezutokabev.weebly.com/uploads/1/3/4/7/134758566/jimarorogif-seladojezenu-vetadin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384036/normal_602c4efad9321.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530846/normal_5fee3aa1ae4db.pdfIn PDF document text
    • https://xorizugabe.weebly.com/uploads/1/3/1/3/131398100/letunisulifiko.pdfIn PDF document text
    • http://azakalaza5.xyz/mingling_of_souls_study_guideldobh.pdfIn PDF document text
    • http://geesecam.com/bluestacks_free_32_bithp98t.pdfIn PDF document text
    • https://gusijanuvo.weebly.com/uploads/1/3/0/8/130874241/xunujejafibifadi.pdfIn PDF document text
    • https://nasuxixogidipan.weebly.com/uploads/1/3/4/7/134701521/jikoxedigixox-tazajot.pdfIn PDF document text
    • https://zalamozosuk.weebly.com/uploads/1/3/6/0/136089451/5337470.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464521/normal_60298d1e5f626.pdfIn PDF document text
    • https://zemutixo.weebly.com/uploads/1/3/4/8/134865820/rivobivodojej_gasajikiborat_noterazizusized.pdfIn PDF document text
    • http://workmonster.net/lord_of_the_flies_chapter_4_reading_and_study_guidee29vv.pdfIn PDF document text
    • http://bcipreactivaperu.com/best_smartphone_for_seniorsfg8pq.pdfIn PDF document text
    • https://vegofifujudiw.weebly.com/uploads/1/3/4/5/134501805/23474.pdfIn PDF document text
    • http://salonvarna.com/mawamamebovobe9.pdfIn PDF document text
    • http://instapriz24.online/xegofunilojepuzamelovertyg.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/dazinibonofobi/7842261655.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/fixeruzojujokalowovovixu.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_off0000dcb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB2 5496 bytes
SHA-256: 3040c07d2178afff99a87e799a971fb498db403c2879ef7832de46cca9341a35
font_01_sfnt_off0000ef7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7D 10096 bytes
SHA-256: 71595c933a0d53446a1c905e01daa49c804233a45895185b50c3ec596ec3f589

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