Malicious PDF — malware analysis report

Static analysis result for SHA-256 542bce3984dc0f81…

MALICIOUS

PDF

72.5 KB Created: 2021-02-24 23:43:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 13942ceaf0c190750fdfc693d417ca62 SHA-1: 062b71e5848c7cf14f9ea489659d8bfde931f516 SHA-256: 542bce3984dc0f81e5feaf427dd29f7bcedfb0584902b40aa164a0b4e4399c86
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=wii+wad+installer PDF link annotation
    • https://cdn.sqhk.co/beledufe/fgjUger/judesixoxididot.pdfIn PDF document text
    • https://mixifomako.weebly.com/uploads/1/3/1/1/131164472/7672731.pdfIn PDF document text
    • https://xewulowew.weebly.com/uploads/1/3/4/7/134757629/1479690.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501804/normal_5fc7c1533e9fa.pdfIn PDF document text
    • https://poxomovuru.weebly.com/uploads/1/3/1/3/131381772/pizesubogavagalevet.pdfIn PDF document text
    • https://cdn.sqhk.co/zovitamojim/Fc3ighi/2912414509.pdfIn PDF document text
    • https://cdn.sqhk.co/mezugifosa/l1igOJy/followers_skyrim_blades.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387825/normal_5fcc654a7c7ca.pdfIn PDF document text
    • https://bigasena.weebly.com/uploads/1/3/4/7/134725946/73719e2c92254.pdfIn PDF document text
    • http://roxifij.22web.org/kuretogujakij.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/tidoba.pdfIn PDF document text
    • https://wixotavu.weebly.com/uploads/1/3/4/7/134764887/4f87ae5d28e0.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/E7icaig/fevisidexotuzovelirajajej.pdfIn PDF document text
    • https://kugibunil.weebly.com/uploads/1/3/1/4/131437599/5887d8d6f4856a.pdfIn PDF document text
    • https://lagubezawepafu.weebly.com/uploads/1/3/1/8/131856446/mefetagolufona.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feneluveje.epizy.com/edipo_rey_de_sofocles_libro_completo.pdfIn PDF document text
    • http://jokosen.atwebpages.com/d-in_unlock_tascam_cd-rw900sl.pdfIn PDF document text
    • http://pedijuwugeta.rf.gd/estar_command_forms.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_off0000e100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE100 4924 bytes
SHA-256: 46046f0dc1bf13fb900a31d570ab3d702511f01285cbaff8703e05aa8fad349c
font_01_sfnt_off0000f1e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E5 10240 bytes
SHA-256: 9736a5194b6c7ac69518e51b488d655dac5503bd5cfc1c32e9d92b5330b8dd77

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