Malicious PDF — malware analysis report

Static analysis result for SHA-256 6148758724684afc…

MALICIOUS

PDF

66.3 KB Created: 2020-12-08 13:32:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3e1c4c76a078cfd5eb822813b3bf1c0a SHA-1: 36c2345138858ca35688c7708d1b8fe14b4a94cb SHA-256: 6148758724684afcb5d5d37f9d00e10d642da2748a5011abf92b3041c466d89d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://trafficel.ru/123?utm_term=north+korea+climate+now PDF link annotation
    • https://nonagezafinu.weebly.com/uploads/1/3/4/6/134666590/841258.pdfIn PDF document text
    • https://bojojibapofaz.weebly.com/uploads/1/3/4/4/134478515/a7258.pdfIn PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/sifufone-rexukunojowibuz-vusozawevu.pdfIn PDF document text
    • https://rijevolokawuja.weebly.com/uploads/1/3/4/6/134661742/revuzajuxifebimap.pdfIn PDF document text
    • https://sopaxibifezubin.weebly.com/uploads/1/3/4/6/134608036/9249496.pdfIn PDF document text
    • https://rizaxulizogi.weebly.com/uploads/1/3/4/7/134753796/bazolatoxibusas.pdfIn PDF document text
    • https://judemozosuduj.weebly.com/uploads/1/3/4/3/134306717/vevakibumer_gononuwe_mumome_ximoxo.pdfIn PDF document text
    • https://ribuborufexegax.weebly.com/uploads/1/3/4/5/134507127/jugub.pdfIn PDF document text
    • https://degijidugaf.weebly.com/uploads/1/3/4/8/134886203/eaa5a7e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3062ca54-ddfe-41fe-a063-dd7dc6072cea/fresco_style_taco_bell.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e734ec917750a3d7e8d7/t/5fca36902ae1264a039c4c4d/1607087761758/93742020864.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/sample_business_plan._doc.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/hampton_bay_umbrella_replacement_canopy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d0507c5-203b-4ad4-a2df-b578413b9d44/playstation_code_generator_2019.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc172a2084698658e621db3/t/5fc91d44d7220e3d8e0687eb/1607015749253/kill_creeper_with_arrows.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_off0000c973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC973 4988 bytes
SHA-256: fa0b94eeba00763e73f124123a64e842a9a692aeabf0f697b94160397badf9da
font_01_sfnt_off0000da53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA53 10160 bytes
SHA-256: 975f5a82c06b1f26be3931c03462086bdacc676c717fec90b982062e638e8f94

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