Malicious PDF — malware analysis report

Static analysis result for SHA-256 75551480cfaa7da8…

MALICIOUS

PDF

66.0 KB Created: 2021-02-17 01:08:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9236938782291a792761bd63d59309e6 SHA-1: 316a55b6f71077392be56eef04cbe1edddc4ae89 SHA-256: 75551480cfaa7da8059af0da5e9b0528a9b050906150bd1e094981a3cf6a1dec
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=introduction+to+flight+anderson+free+pdf PDF link annotation
    • https://cdn.sqhk.co/nepelusir/f3hecge/41446197073.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403141/normal_5fcd60607968a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475985/normal_600f22b2381db.pdfIn PDF document text
    • https://purapunebofo.weebly.com/uploads/1/3/4/8/134888030/483f9cd926d5a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366369/normal_5fcb647f97d37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384310/normal_6017e0be5a055.pdfIn PDF document text
    • https://resewirebibabap.weebly.com/uploads/1/3/1/3/131379054/125dbcdb.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/yDgejjd/rapunzel_dress_womens.pdfIn PDF document text
    • https://wogalipa.weebly.com/uploads/1/3/4/3/134316604/podotu-xaluf-gakodozaz.pdfIn PDF document text
    • https://zodoxofavuzawa.weebly.com/uploads/1/3/1/4/131437464/7826439.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401982/normal_5ff3cbced027d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470207/normal_6008f6bbd37db.pdfIn PDF document text
    • https://petuxomurekag.weebly.com/uploads/1/3/0/8/130874153/fcf84.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408981/normal_5fdfaaf0a0915.pdfIn PDF document text
    • https://cdn.sqhk.co/rinugezig/SvJRxhi/edurev_exam_preparation_mock_tests_sample_papers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D4 5356 bytes
SHA-256: 22e38c44a6ac7a2950ba85edb677908b47ead0ff388c75c5e9c4c7d7da0f92a6
font_01_sfnt_off0000d801.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD801 10252 bytes
SHA-256: ddcaa53c7a790bb94d51d92592821d6451f616cefc8bc9bee6260b9cb10209a9