Malicious PDF — malware analysis report

Static analysis result for SHA-256 39ffc0fd95169402…

MALICIOUS

PDF

39.2 KB Created: 2020-11-08 10:12:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: bfe04572f4398401efdeeb06503d5375 SHA-1: 3b9756cfb1e430eb169a4598406179d6e0c6a207 SHA-256: 39ffc0fd951694029fd6b5499982ce2b8d5810810e1dd47c8bfd8003fee0de71
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://trafftec.ru/aws?keyword=the+honest+truth+dan+gemeinhart+pdf PDF link annotation
    • https://rogidalot.weebly.com/uploads/1/3/1/6/131636841/vesirobiba-weritabe-xidefibojesikol-tibokewaxumokaj.pdfIn PDF document text
    • https://rojusonevupa.weebly.com/uploads/1/3/0/8/130814232/3063935.pdfIn PDF document text
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/5728570.pdfIn PDF document text
    • https://zobejonimofov.weebly.com/uploads/1/3/4/3/134354570/xobirafepiworak_duwelevu.pdfIn PDF document text
    • https://fawefugixizim.weebly.com/uploads/1/3/1/3/131383791/wemozamokabeb_ravivol_nevagimobule.pdfIn PDF document text
    • https://wixurawitubeza.weebly.com/uploads/1/3/4/3/134319602/kifevipixim.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/lozosukesul.pdfIn PDF document text
    • https://bajazari.weebly.com/uploads/1/3/4/3/134314741/8592856.pdfIn PDF document text
    • https://rixutabenenik.weebly.com/uploads/1/3/4/4/134498467/5488874.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456676/normal_5fa5d21a86b40.pdfIn PDF document text
    • https://munerotilaxamo.weebly.com/uploads/1/3/4/4/134476206/1044491.pdfIn PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/3862815.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/2549fa90-f354-44ba-b3eb-3558a24cf546/57105498120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba30ac2e-d110-48dc-b95e-51a94a6b9fe1/cave_story_ballos_guide.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_off00005b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B8C 5372 bytes
SHA-256: a72254ec9b70df6699fd64b61f8d8f7c6f34ceaa9c120a19d28287bb775d8097
font_01_sfnt_off00006da7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA7 10168 bytes
SHA-256: 901e32deeaa29c8df0b418d0d542fbbc40ff2c24ec9fdd7749a3437c4437c3e3

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