Malicious PDF — malware analysis report

Static analysis result for SHA-256 33593391a8345f7b…

MALICIOUS

PDF

75.5 KB Created: 2021-02-13 10:36:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d8503c3de4d2520ad38f0d601a384ccb SHA-1: 1001e4202259d7ed34d359f7922c32aafc50e150 SHA-256: 33593391a8345f7b0614d5a8d0a2bed0104da420cd94e865a1869c7c4b15a214
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://jacksth.ru/aws?utm_term=new+south+movie+2018++in+mp4 PDF link annotation
    • https://ziwivebagojub.weebly.com/uploads/1/3/1/8/131871618/7388b0adeec.pdfIn PDF document text
    • https://nusepetuvake.weebly.com/uploads/1/3/3/9/133997573/xoxizomaxomofif.pdfIn PDF document text
    • https://vepovipozo.weebly.com/uploads/1/3/4/4/134472033/ca3358fea8.pdfIn PDF document text
    • http://waneboto.66ghz.com/qs_world_university_ranking_2018.pdfIn PDF document text
    • http://jevufoduxixan.22web.org/92211272256.pdfIn PDF document text
    • https://vizijupazikek.weebly.com/uploads/1/3/2/8/132814338/6005246.pdfIn PDF document text
    • http://fafaviga.iblogger.org/chair_yoga_for_seniors_sequence.pdfIn PDF document text
    • http://bilomibedaralo.iblogger.org/83588934171.pdfIn PDF document text
    • https://konomotawet.weebly.com/uploads/1/3/1/3/131379362/4b53a80.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://konevimojo.epizy.com/76807001051.pdfIn PDF document text
    • http://diribiboturo.epizy.com/sheetal_granites_jigani.pdfIn PDF document text
    • http://wolodavufaxus.rf.gd/8752263845.pdfIn PDF document text
    • http://lowadof.epizy.com/camscanner_free_app.pdfIn PDF document text
    • http://rexerikilo.epizy.com/16811014450.pdfIn PDF document text
    • http://roxadib.epizy.com/93390343682.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_off0000eaf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF1 5448 bytes
SHA-256: e6740ab7365d9582e41fe5beb2b9b7a528849fbb088e5f14574331a863a3c3a7
font_01_sfnt_off0000fd88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD88 10360 bytes
SHA-256: c27a089afd1c408337bfb01af7c851797a9c1f6cb0ec605814fa16c2b571e5ec