Malicious PDF — malware analysis report

Static analysis result for SHA-256 d72fb09d60ec3275…

MALICIOUS

PDF

64.0 KB Created: 2021-02-13 04:42:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1155ebb80cc60ead45ec623f587e91fd SHA-1: 6fea6a322784f87f8cc89afe9a3b789e8b6149d6 SHA-256: d72fb09d60ec3275c1c078fb0f3254b36158a8b96df7d4d230432b7a85194e62
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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=pennridge+high+school+calendar+2019 PDF link annotation
    • http://psychologyrelax.xyz/meiosis_1_and_meiosis_2_worksheetvqw6z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444882/normal_600bfda2cfa3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387035/normal_6006917af2fb5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485157/normal_5fded60c35dcd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382197/normal_5fffadb202d21.pdfIn PDF document text
    • https://jimivisimobud.weebly.com/uploads/1/3/4/9/134901817/8679272.pdfIn PDF document text
    • https://cdn.sqhk.co/tinupolureg/RqgfhgN/best_base_builder_games_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410211/normal_5fdbfadf710f3.pdfIn PDF document text
    • https://pelefazefipaguj.weebly.com/uploads/1/3/4/8/134892892/zuguravaromibuwanu.pdfIn PDF document text
    • https://jugivukovetid.weebly.com/uploads/1/3/0/7/130739525/6996585.pdfIn PDF document text
    • https://jumirugefof.weebly.com/uploads/1/3/3/9/133997886/wisazuvapudu.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/rubidokezive/making_lasagna_fresh_pasta_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/dobomofadimi.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/xafub.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_off0000bddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDDD 5684 bytes
SHA-256: edc93edcb6850ae6dd820b64cfe5aaaf506ec40f25fdba89a33621e3d20b7984
font_01_sfnt_off0000d128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD128 10008 bytes
SHA-256: 4ce6db4443fe7a8d563205c9dc1e071b096c76c3c2029510c565ef9c2d07a040