Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eab51688433ceb8…

MALICIOUS

PDF

72.6 KB Created: 2021-02-25 14:25:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e4ecc982aae1304b528f79486af99d2d SHA-1: 32dcaaddfe8a7a9076a122cbd5594abd78eb64dc SHA-256: 6eab51688433ceb80eb215153528a440c03c4808ab396726c8df684f2dbfb10b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://maypoin.ru/wix?keyword=jelly+comb+mini+keyboard+manual PDF link annotation
    • https://jajugodi.weebly.com/uploads/1/3/4/9/134902248/4077639.pdfIn PDF document text
    • http://siondez.ru/teselosokupobwppkr.pdfIn PDF document text
    • https://dafujoxuw.weebly.com/uploads/1/3/0/9/130969001/kimosisumato.pdfIn PDF document text
    • https://garujidizog.weebly.com/uploads/1/3/1/3/131398488/f0fb8.pdfIn PDF document text
    • http://wrinklestiltskin.com/sutugijjf5k9.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/32697216495.pdfIn PDF document text
    • https://pebabole.weebly.com/uploads/1/3/4/6/134698512/538fb.pdfIn PDF document text
    • https://nametipij.weebly.com/uploads/1/3/1/1/131164318/3694374.pdfIn PDF document text
    • http://tevfikyuce.xyz/2303984502210w6h.pdfIn PDF document text
    • https://jiwumakot.weebly.com/uploads/1/3/4/2/134235931/noputepasi.pdfIn PDF document text
    • https://kokodukitibov.weebly.com/uploads/1/3/4/6/134609001/firukanisiwazu.pdfIn PDF document text
    • https://mufajagirudul.weebly.com/uploads/1/3/1/4/131452858/1393859.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/47927382498.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/wonemodit.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/51015078711.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/weather_report_ferozepur_punjab_india.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/93565047508.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/14716938768.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/lerujalasawofizelib.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/tutorial_photoshop_cs3_lengkap.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_off0000de5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5F 5200 bytes
SHA-256: f435b8e752dc7e08904bd5a4cb449846ca2e21e8a23da5efcdf7e34bdea0a485
font_01_sfnt_off0000f000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF000 10428 bytes
SHA-256: 317535f61008248cb29c5cc550fb88b2e2adf5f44fb1bb93492510550e8b83dd

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