Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e7f072c074bc5fd…

MALICIOUS

PDF

71.0 KB Created: 2021-02-10 19:48:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 648dc20b78b8907ed8111c7da777b298 SHA-1: ee012496c2a25cfe3daf67f51b1b84cfec0ac101 SHA-256: 7e7f072c074bc5fddc1dbacd92f37c4be593eadd7f4237a15949a26ce866f82d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=characteristics+of+communication PDF link annotation
    • https://cdn.sqhk.co/nagigureti/jj9uUih/gugepajobewudusomanox.pdfIn PDF document text
    • https://xomugewobi.weebly.com/uploads/1/3/0/8/130814749/9be42c94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415748/normal_5ffda743613e7.pdfIn PDF document text
    • http://all-system7.xyz/679865984043oe7q.pdfIn PDF document text
    • http://covid-19online.site/vezetudaverapina7oeo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444356/normal_6010622083b88.pdfIn PDF document text
    • https://cdn.sqhk.co/zazerejaxu/cy9ieia/tubing_in_colorado_mountains.pdfIn PDF document text
    • http://tesar-krd.ru/jailbreak_in_app_purchase_tweakgn8pn.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/hhjidhj/feborijiwenavapapapa.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/9VBVhai/control_products_inc_freeze_alarm.pdfIn PDF document text
    • https://kavisovilige.weebly.com/uploads/1/3/5/3/135308643/vaxosarenub.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/rovuweraja/fosexaxadomejakelad.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/uniforme_significado_en_ingls.pdfIn PDF document text
    • https://s3.amazonaws.com/wujanozo/google_chrome_network_error_while_ing.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/owl._carousel._min._js_free.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_off0000da3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3F 4996 bytes
SHA-256: 7e653d96b5dca6224ce971e2a89b02690887f244e7644be2c7ead77b1ca4e75a
font_01_sfnt_off0000eb0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0B 10568 bytes
SHA-256: 9c93c4601eb643f76479e520976831199a0bf604cb84dd3524353d69160625fe