Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd2fb97c38d0bcac…

MALICIOUS

PDF

70.1 KB Created: 2021-02-18 01:56:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 885a34be2d034a4bfa4cf776029b199a SHA-1: 9a17ac74d143c73a76a844b800b022f00012cce7 SHA-256: fd2fb97c38d0bcacca6b54360c16fcb9a91d178883a066d446923fba8e5e5db2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/wix?keyword=humvee+operator%2527s+manual PDF link annotation
    • https://pixasarajesuwov.weebly.com/uploads/1/3/4/6/134688766/9562184.pdfIn PDF document text
    • https://bosebekepomij.weebly.com/uploads/1/3/4/8/134870535/sakixapi-winejoduka.pdfIn PDF document text
    • https://fanarise.weebly.com/uploads/1/3/4/3/134377412/9067575.pdfIn PDF document text
    • https://pajodutakimileg.weebly.com/uploads/1/3/4/4/134474341/sisusunawolakufog.pdfIn PDF document text
    • https://kojezuduw.weebly.com/uploads/1/3/5/3/135326104/a283f74231f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382189/normal_600c80a665c2d.pdfIn PDF document text
    • https://luwomobesu.weebly.com/uploads/1/3/4/2/134235002/kiduju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376599/normal_5fdb64cddc92f.pdfIn PDF document text
    • https://lowarimubabop.weebly.com/uploads/1/3/4/7/134712264/veked_rupawobus_vikonuwog.pdfIn PDF document text
    • https://nisudine.weebly.com/uploads/1/3/1/4/131454656/2fa8a7d6c9beef.pdfIn PDF document text
    • https://rapironid.weebly.com/uploads/1/3/1/3/131398378/183e53ee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/fedijopokusokuxekifoma.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/baby_doll_status_video.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/73150753692.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bb17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB17 4856 bytes
SHA-256: c0b00a1019a1cf4960ae1cc98a50b1fa398f816bc0b02a2b894081fb6cad348f
font_01_sfnt_off0000cb73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB73 6068 bytes
SHA-256: 58b4873d33ac9fffaf45ed1a2312b8eb5fadf3b067e77f8cfe9e87095f6a7717
font_02_sfnt_off0000db23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB23 9880 bytes
SHA-256: a8beaace5f873a9120426fc9fe2a770e1a7342dd6db50fc728e1044ea521aefe
font_03_sfnt_off0000fcf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF1 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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