Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5acec156987328b…

MALICIOUS

PDF

76.7 KB Created: 2021-01-23 18:02:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 3cf4521304d3ebb3a0f7354a08d214a4 SHA-1: f4d59ef9dd715c49a01487f612b7181e52013ae8 SHA-256: a5acec156987328be650c9991745d960fe25f2797491d59f8ed343900650e581
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://trafficel.ru/123?utm_term=vegan+asian+dessert+recipes PDF link annotation
    • http://xazivigufimu.22web.org/74292253707.pdfIn PDF document text
    • http://kitigaw.22web.org/fire_department_training_report_template.pdfIn PDF document text
    • https://site-1253377.mozfiles.com/files/1253377/toefl_ibt_example.pdfIn PDF document text
    • https://miduginoxem.weebly.com/uploads/1/3/4/8/134892771/eaa5641bf29.pdfIn PDF document text
    • https://buriviniroxino.weebly.com/uploads/1/3/1/6/131606563/8907224.pdfIn PDF document text
    • https://xifugewelude.weebly.com/uploads/1/3/4/3/134353264/b462031a2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kivekedifewu.rf.gd/coloring_sheets_for_adults_halloween.pdfIn PDF document text
    • http://reditavipesef.rf.gd/android_tv_box_x10_4k.pdfIn PDF document text
    • http://vemesivudaro.epizy.com/90764689801.pdfIn PDF document text
    • http://xefivaz.epizy.com/fofawi.pdfIn PDF document text
    • http://vomifavub.epizy.com/cell_membrane_information_with_pictures.pdfIn PDF document text
    • http://taxisariwoboduz.epizy.com/bharat_petroleum_application_form_2019.pdfIn PDF document text
    • http://todojenosefotaz.epizy.com/psychology_project_topics.pdfIn PDF document text
    • http://guxajez.rf.gd/27406348227.pdfIn PDF document text
    • http://zowiseli.epizy.com/77297866942.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_off0000effb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFB 5172 bytes
SHA-256: 632f45b399091ab85354cf12532d18347d4ef4878c52f6424dff6aac8c45bd72
font_01_sfnt_off000101aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AA 10796 bytes
SHA-256: 13c258d01f684cc4b31d56bf632d78675044267d47a67e18e0e58b024730c5bc