Malicious PDF — malware analysis report

Static analysis result for SHA-256 53be7aaaab784bb1…

MALICIOUS

PDF

72.6 KB Created: 2021-02-08 08:00:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9c54ad3ce6729f1fb25af79926ab709e SHA-1: b3352513c0655c601f4ea280a206419d2dd31e4c SHA-256: 53be7aaaab784bb1cfa8772bb6a5f8d90289862020e5fd59f6e353d04b4cca07
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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=chennai%20express%20full%20movie%20%20moviescounter PDF link annotation
    • https://cdn.sqhk.co/vibisidumes/j4Fx63w/xufewosibowewupefepelu.pdfIn PDF document text
    • https://cdn.sqhk.co/lufezeralon/oqVhaNJ/xagifo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405179/normal_600353eea3c2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408718/normal_60190d28e6938.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/je9SqtM/tobuxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463791/normal_5fe88122cc5cf.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/Dgeihzd/jesurofubupit.pdfIn PDF document text
    • https://cdn.sqhk.co/nejisakatok/gehbrUV/wotilurusakubiwimijuxug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419452/normal_601bebb20a3f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://remigesej.epizy.com/50150728425.pdfIn PDF document text
    • http://zuzogit.rf.gd/46683951037.pdfIn PDF document text
    • http://mixonanax.epizy.com/hpacucli_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/battery_life_report_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/10631124531.pdfIn PDF document text
    • http://woxutonugosafer.epizy.com/translate_animation_in_android_xml.pdfIn PDF document text
    • http://www.imdb.com/In 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_off0000e0aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AA 5288 bytes
SHA-256: a1116239ae0f07fb72838ed04e70a28c39f341718785f33b9a54fb55fd072cab
font_01_sfnt_off0000f285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF285 10292 bytes
SHA-256: ca409e4a950805dc6540f88a8c35682cc34507e69994fa559b94fa05a861e889