Malicious PDF — malware analysis report

Static analysis result for SHA-256 4186afc9d239b823…

MALICIOUS

PDF

66.4 KB Created: 2020-11-26 03:01:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: fbb4b41d79fcb77dde92c5c61a7e57b2 SHA-1: 9925442ac655d3b715bbe9152d41cf9b54ea8506 SHA-256: 4186afc9d239b823d6b3bcca0a7e61277be1d19c167614e03d55ed5c10cdc0f3
304 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://kasozufadoji.weebly.com/uploads/1/3/4/5/134523760/tozozinukimu-zakokotid.pdf.
  • 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://traffine.ru/aws?utm_term=movies+counter++bollywood In PDF document text
    • https://kasozufadoji.weebly.com/uploads/1/3/4/5/134523760/tozozinukimu-zakokotid.pdfIn PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/9872142.pdfIn PDF document text
    • https://pejuloxekipural.weebly.com/uploads/1/3/4/4/134403187/xoxuvise.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368489/normal_5f87f1ec846bb.pdfIn PDF document text
    • https://jonipafatanepa.weebly.com/uploads/1/3/2/7/132741476/nevotoxer.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/8746e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375531/normal_5fb81fc5c2f6d.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/0a7eb905579.pdfIn PDF document text
    • https://wifusewaxoxuxi.weebly.com/uploads/1/3/4/4/134497844/jofekeg.pdfIn PDF document text
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/e93bc161.pdfIn PDF document text
    • https://tajuweselu.weebly.com/uploads/1/3/4/3/134362517/wulakezew_ragag_wesin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3cfe11c-1f2d-4cdb-9915-a93226cc56de/virureje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bba8163f-6f86-4fab-9996-be917b8af84c/luke_combs_when_it_rains_it_pours_ka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/048ebe25-287f-432e-a9e3-7f090d3a518a/gta_san_andreas_cheats_ps2_ferrari_car.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/411d6fb0-c28b-4eaa-ac82-eb81bafc44fe/36984246793.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_off0000c967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC967 5120 bytes
SHA-256: 793cc928999b4177788a9bae52d285a8947f560d87226b1baec5dd24acc1abfd
font_01_sfnt_off0000db09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB09 9996 bytes
SHA-256: 52532a7c3433bf772aa0e0dcb51b21d120645d9d82e2f9764ea6457d6b9d3dbf