Malicious PDF — malware analysis report

Static analysis result for SHA-256 758ce49816928691…

MALICIOUS

PDF

71.7 KB Created: 2021-03-02 09:27:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 58f37457cf29ce0959cdc81a7f5daba0 SHA-1: c54e3cbd518373a9a4d4f9d7051a27acb13dcd08 SHA-256: 758ce49816928691a7c08f89b0c0b0d72e5de1b8cbbe14c6da4aa964ad3dfd3b
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://midufefew.ru/award?keyword=computer+science+an+overview+13th+edition+answers PDF link annotation
    • http://bachanalytics.com/capitulo_7a-7_realidades_1_answersmju4u.pdfIn PDF document text
    • http://jegexovavof.iblogger.org/logos_bible_software_free.pdfIn PDF document text
    • http://teenagetutor.net/vapegejefbyzwq.pdfIn PDF document text
    • https://burekanokem.weebly.com/uploads/1/3/1/0/131069897/7405313.pdfIn PDF document text
    • https://nojabepeteguki.weebly.com/uploads/1/3/4/6/134669956/0157b4.pdfIn PDF document text
    • http://about-central.com/cabrio_washer_service_manualnu4mh.pdfIn PDF document text
    • http://axecheat1.xyz/nakewupowebomoburitipenazrabh.pdfIn PDF document text
    • https://gilaxaled.weebly.com/uploads/1/3/1/4/131438091/xenak-vepupafabule-govomi-zezajefa.pdfIn PDF document text
    • https://netulomite.weebly.com/uploads/1/3/2/8/132814473/2895928.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sekijipaladi.epizy.com/babixazipemiw.pdfIn PDF document text
    • http://ladibemotivusam.epizy.com/current_government_dietary_guidelines.pdfIn PDF document text
    • http://gidimuni.epizy.com/27367690170.pdfIn PDF document text
    • http://wibutena.rf.gd/72148639102.pdfIn PDF document text
    • http://xenuduximowub.epizy.com/african_girl_song_lyrics.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_off0000db78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB78 5552 bytes
SHA-256: 2cf22c95fa30a107b34326c7b5f691e165eb25c5990a22b05fd7e9ff61fb2b99
font_01_sfnt_off0000ee43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE43 10568 bytes
SHA-256: 51c1b9085828dc8298399ac4fa8a4ee101956b2d87f8c4c79ab3e920ef8e78da