Malicious PDF — malware analysis report

Static analysis result for SHA-256 134a7643447c0649…

MALICIOUS

PDF

70.0 KB Created: 2021-02-12 02:46:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 178776e0b5d8736d23a4987443d1afeb SHA-1: fcc2f247112156a4c19c3d98a562eaf268fa3ade SHA-256: 134a7643447c0649341f4e9b9a054006cfbb62ed8d03644fd29f768779aedded
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://baarspo.ru/wix?keyword=word+plexers+with+answers PDF link annotation
    • https://subafoxa.weebly.com/uploads/1/3/1/3/131379179/7619b76464278f.pdfIn PDF document text
    • https://binoxumo.weebly.com/uploads/1/3/1/4/131452823/8e482a872ed1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460980/normal_5ffd98a64baaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461201/normal_6025a8e41a077.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373776/normal_5fd23f8febd69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501998/normal_5ff958954c1dc.pdfIn PDF document text
    • https://wozukepob.weebly.com/uploads/1/3/4/0/134017809/2055470.pdfIn PDF document text
    • https://tudogevu.weebly.com/uploads/1/3/2/7/132741144/wexepi.pdfIn PDF document text
    • https://guzovadolo.weebly.com/uploads/1/3/1/6/131606502/9405192.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461481/normal_600f28b03401c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447658/normal_5ff65870e9485.pdfIn PDF document text
    • https://difanewoxapazu.weebly.com/uploads/1/3/5/3/135321324/sitajiwizebibig-nafojemixo-tepenosizo-voximutomitup.pdfIn PDF document text
    • https://kurinasuvofete.weebly.com/uploads/1/3/5/3/135334761/roximedumo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467287/normal_6016cc8df35ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374366/normal_600c7889350c5.pdfIn PDF document text
    • https://lufukosiresefo.weebly.com/uploads/1/3/4/7/134707539/2900b49218a05.pdfIn PDF document text
    • https://dukuvelawabuze.weebly.com/uploads/1/3/0/9/130969723/34334c484f679.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450434/normal_5ffdc6c833756.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464303/normal_6012533ac4f6b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zaxuledo/bikegotorigawokusisu.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/dictionary_oxford_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/ain_t_your_mama_karaoke.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/niravebado.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D9 5008 bytes
SHA-256: f878a0591671bbb5a6c4783307290442228a9b33a574e73d1eb4ce97c65f50c6
font_01_sfnt_off0000d8ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8EE 10428 bytes
SHA-256: a218f4fd93f6c9a6d85285a242303e6850a9f7246a24244a77a7cea266a7d941
font_02_sfnt_off0000fc9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9E 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34