Malicious PDF — malware analysis report

Static analysis result for SHA-256 de9833dd3e4d2a13…

MALICIOUS

PDF

73.3 KB Created: 2021-03-01 15:41:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 34c3db5597e37dd4a0e6f97830ffe42c SHA-1: fee49d36d952eb76e2c73a23378a3dc8217f4dd1 SHA-256: de9833dd3e4d2a1309ff78fe7e951522c87f2d662c0a9a1e09c08befa0b7b251
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://lozipotod.ru/award?keyword=how+to+clean+dyson+big+ball+animal+filter PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369664/normal_600c44bf90939.pdfIn PDF document text
    • https://wavamabixalovag.weebly.com/uploads/1/3/4/5/134525364/voviwetepubef_kesodebigiwetix_dokatiru.pdfIn PDF document text
    • http://revilokepudidu.mygamesonline.org/moxewelisotemaxetam.pdfIn PDF document text
    • https://gipavenox.weebly.com/uploads/1/3/5/9/135966662/1307425.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478387/normal_601e604eec686.pdfIn PDF document text
    • https://vifomamup.weebly.com/uploads/1/3/1/1/131163898/0cc1036e4.pdfIn PDF document text
    • http://tafuxasomup.getenjoyment.net/82204708048.pdfIn PDF document text
    • http://puvepum.getenjoyment.net/is_there_a_new_roku_coming_out.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411498/normal_603c1923191b5.pdfIn PDF document text
    • https://tipolapuponawog.weebly.com/uploads/1/3/2/6/132696210/potis-gepazelasubogav.pdfIn PDF document text
    • http://faripofijukevom.mywebcommunity.org/zalowefimumepudo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383467/normal_603aee9ecfce8.pdfIn PDF document text
    • https://vizegibog.weebly.com/uploads/1/3/4/4/134458583/wezepujogedaz-dubegekobejume-zipebozopuwevu-rafosagaxizes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zegetafirotazaz.atwebpages.com/wagner_paint_sprayer_ratings.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/12368080948.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_off0000e115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE115 5636 bytes
SHA-256: a77c4139f67eb8cd97e19fa8f684657aa391efe8d071867b6712894b69d3c749
font_01_sfnt_off0000f446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF446 10528 bytes
SHA-256: 02e10cc912897b2a22912f180f0277cbd536f53f7bf42f5857bec47677f8d146