Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0a3e7a5dc69f727…

MALICIOUS

PDF

85.3 KB Created: 2021-03-25 12:13:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5b12119b90f730775c476dff9588955e SHA-1: 872cda8f98014c5f1d45a5d17557062f58ff76c9 SHA-256: a0a3e7a5dc69f727a6187724990932f2e741bd5aad7048e8f44a25a61b3710fd
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=hotspot+shield+apk+cracked PDF link annotation
    • https://cdn.sqhk.co/posiraki/egjpjhh/ultimate_wolf_simulator_2_apk_mod.pdfIn PDF document text
    • http://lg-copyright.com/tepotedurn47hb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498983/normal_5fcd1f7f00665.pdfIn PDF document text
    • http://copyright-rules-help.com/miziwomat7694y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492546/normal_60480fdd5c57d.pdfIn PDF document text
    • http://akfb.online/vumawamusasusuksyqh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475000/normal_60415093ace64.pdfIn PDF document text
    • https://cdn.sqhk.co/ratobomebal/cLiihiO/63758985978.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/gdQjgMR/multiple_business_accounts_on_instagram_use_music.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486199/normal_5ff75b8d51820.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469351/normal_603d858215e63.pdfIn PDF document text
    • https://cdn.sqhk.co/nulogoxeja/anQsnEO/sojeruzetuvaxusit.pdfIn PDF document text
    • http://vevaxogejaz.scienceontheweb.net/rovogipulivuwujar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480732/normal_6037c133e0e3c.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/raxalunu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c3bb11cb-ba02-405d-8462-2b4421b436e1.filesusr.com/ugd/4c7814_0072f82f318b4a69ac2fc75c34d5bfbd.pdf?index=trueIn PDF document text
    • https://550dfcec-0280-4316-a0d5-68b74a7a20b9.filesusr.com/ugd/f59309_4099da90cc06475b85468291b5890110.pdf?index=trueIn PDF document text
    • https://78905da9-dd21-4190-abaa-c894c042e703.filesusr.com/ugd/851c7c_1a911be5eebb49b69b1adf5dd521048d.pdf?index=trueIn PDF document text
    • https://5a1138df-423b-4a5d-a7c7-36223740754e.filesusr.com/ugd/a72fa8_721edef774b944a0a5f33eab7aae7b4f.pdf?index=trueIn PDF document text
    • http://popofisofol.myartsonline.com/breeders_cup_entries_2020.pdfIn PDF document text
    • http://tiredosutozol.atwebpages.com/afcat_2020_official_notification.pdfIn PDF document text
    • https://2a983b51-2e13-4971-8c1f-a5bca3ab4353.filesusr.com/ugd/e1a791_d411bf31aaeb4fc98e284e23666aa198.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10800 5184 bytes
SHA-256: 4d612c7e2a50516b6a701b4f4345ed976b2a74145a9b320db8c7489357eb36d7
font_01_sfnt_off00011992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11992 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00012220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12220 10812 bytes
SHA-256: b9253c8653ea74345360eccee3c29ffba04dad9c71956052bfb7add0dc50277c

Open this report in the interactive analyzer, or submit your own file for analysis.