Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4abf650d1654bb5…

MALICIOUS

PDF

70.6 KB Created: 2021-02-15 10:54:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2110efdc9b392f03d04e59bcc43552ac SHA-1: 5f9939b878584a2d182799026cd5689e16af21ee SHA-256: f4abf650d1654bb51ac0c7524297da2d3b5ab729194a1b0efbcf1d64a83bf801
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wb?keyword=revolutionary%20suicide%20newton PDF link annotation
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/gunepupatunug_xiluruxatix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464539/normal_601ccfd3e98a3.pdfIn PDF document text
    • https://nexudusuje.weebly.com/uploads/1/3/0/7/130740550/4036281.pdfIn PDF document text
    • http://hrushch.space/peyo_merce_ensena_inglesg67va.pdfIn PDF document text
    • https://xixasoxi.weebly.com/uploads/1/3/5/3/135324484/jupemubejan.pdfIn PDF document text
    • https://zupuluduwiwafop.weebly.com/uploads/1/3/2/6/132681460/3208453.pdfIn PDF document text
    • https://befunopokoxa.weebly.com/uploads/1/3/5/3/135327779/vegegoku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444370/normal_5ffeb8992fc40.pdfIn PDF document text
    • https://cdn.sqhk.co/gupuwiwi/jaAichd/mutant_creatures_addon_bedrock.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxedanafowa/bWn3Kal/fojinabovapugokage.pdfIn PDF document text
    • https://mekowoto.weebly.com/uploads/1/3/0/7/130738632/77e85c2728.pdfIn PDF document text
    • https://lepepapiminokuj.weebly.com/uploads/1/3/4/4/134493398/e94e33508e83b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487431/normal_5fc5bd76ec42b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bivadalov.epizy.com/apache_hive_beeline.pdfIn PDF document text
    • http://supovopekowo.epizy.com/gesimimiwik.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_off0000d7f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F7 5192 bytes
SHA-256: 4f4f8365fc9822a1c0d5ac6c5c072bda068b96853414fca7a685d71c9f536053
font_01_sfnt_off0000e9cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CD 10544 bytes
SHA-256: 069bdadf808bfbcd17fa313a75b2c5960caad46fe851d59f1882d3c5d417a1e1