Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc57f21c0da8742d…

MALICIOUS

PDF

80.9 KB Created: 2021-03-04 02:12:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: afb2eebfd40a3169310ccad384fff6cb SHA-1: 6adc943c98c184db5abc8e8f985823cd98f21bca SHA-256: cc57f21c0da8742d6ef917d407ff824dc7ab481f338dbc5e1b11cc9b1240e2ee
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://vilenefex.ru/award?keyword=dark+souls+3+best+pvp+weapons+2018 PDF link annotation
    • https://zaroxirag.weebly.com/uploads/1/3/4/4/134457582/1459cd.pdfIn PDF document text
    • https://bozobazevadetob.weebly.com/uploads/1/3/1/6/131607158/51483f.pdfIn PDF document text
    • https://kepubaxolawava.weebly.com/uploads/1/3/4/7/134703856/777718.pdfIn PDF document text
    • http://safodimim.iblogger.org/annual_income_statement_template.pdfIn PDF document text
    • https://sobomevoza.weebly.com/uploads/1/3/0/7/130739746/nafenodifasiku_mijalenogatul_bupudupuwurovi_pofikajezivukif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379602/normal_600e6782ad886.pdfIn PDF document text
    • https://fofaxofik.weebly.com/uploads/1/3/4/5/134521529/kaziguxageveb.pdfIn PDF document text
    • https://pinipinemijik.weebly.com/uploads/1/3/0/8/130814728/bodizeduxikagig_bawipawajig_mulajoviwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484814/normal_601fd79b52205.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xatamiv.rf.gd/41205489015.pdfIn PDF document text
    • http://jusexezoti.epizy.com/chartboost_unity_sdk.pdfIn PDF document text
    • http://benuniwutaferaz.epizy.com/bishop_score_interpretation.pdfIn PDF document text
    • http://waverotefiwob.epizy.com/black_panther_cat_information.pdfIn PDF document text
    • http://vufufule.epizy.com/17973474908.pdfIn PDF document text
    • http://lugirike.epizy.com/difference_between_two_dates_salesforce_report.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_off0000fee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE4 5852 bytes
SHA-256: 554725124515f204ea7a6f9ce92b0a76ed23c3578c8ad1799d84ce877cd6ccf7
font_01_sfnt_off000112fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112FD 10524 bytes
SHA-256: eacb4e98fcf1003d6c6adeb77005af2e3e3a2ae3995acb4afe14f9671d345214