Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce2601480ad24066…

MALICIOUS

PDF

73.9 KB Created: 2021-02-15 13:00:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1dab058cedd7fea0b0fdddbbf762c54e SHA-1: 97efe4c1ed077922f00b3b78154ec192d0138b5d SHA-256: ce2601480ad24066f5b4e7575b9a823d33e6d47495f16d8d69c2a6991e5e7b10
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains obfuscated content and a heuristic firing for PDF_SEO_LINK_FARM, indicating it is part of a link farm designed to redirect users. The embedded URL points to a suspicious domain, and ClamAV detection confirms its malicious nature as a phishing trojan. The document body, though heavily corrupted, suggests a lure related to 'Nutri ninja auto iq blender instructions'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://baarspo.ru/strik?utm_term=nutri+ninja+auto+iq+blender+instructions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459163/normal_5fde835228605.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494663/normal_6011a9439d7f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368250/normal_5fcbabe1e8e11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380707/normal_6029716b70138.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379489/normal_6003c1a7023b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480904/normal_5fd822d3e5508.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_5fe8cca98fa39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486220/normal_601c6196c2be7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407316/normal_5ffd4724e72d0.pdfIn PDF document text
    • https://betisifi.weebly.com/uploads/1/3/1/4/131438474/fofuxowenoxozukun.pdfIn PDF document text
    • https://lotuvimipel.weebly.com/uploads/1/3/0/7/130739731/396f8923e1cf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kisagoz/jidudevaperoxewowar.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/gifuluwikavosejazubux.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/blacksmithing_leveling_guide_wotlk.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/forizoxidenexaxanukesituk.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/manualidades_como_reciclar_botellas_de_plastico.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/19137629131.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/79666186228.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E3 5128 bytes
SHA-256: 49e71e98d8d409506bd732322c81cce4d502891eb5aa02af351789f8d0e8e027
font_01_sfnt_off0000e452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE452 11364 bytes
SHA-256: 0d59f2f66e226aebb8c5b0e54ac824df45ecc8713e6d3e8cee7aaa09f49e2257
font_02_sfnt_off00010a84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A84 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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