Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0eeade343dc7f34…

MALICIOUS

PDF

71.9 KB Created: 2021-01-29 01:56:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6a25f58df54377648bfb28c43c70f0d2 SHA-1: 212556264c601e342ea6175cfbcabc2eafedd01c SHA-256: e0eeade343dc7f3464bf9fc76d1ff9322811525c99de55c81dbc28a0f1da97a5
224 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and numerous external links, many of which point to PDF files hosted on Weebly, suggesting a link farm or redirector strategy. The presence of UTM parameters in one of the URLs indicates a potential phishing or social engineering lure, aiming to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://druttle.ru/123?utm_term=st+anne+church+detroit PDF link annotation
    • https://junezemojevav.weebly.com/uploads/1/3/2/7/132740237/7064213.pdfIn PDF document text
    • https://defiduzumuxel.weebly.com/uploads/1/3/2/6/132682342/nowujekofubuvojifeza.pdfIn PDF document text
    • https://xevefoworux.weebly.com/uploads/1/3/1/3/131380592/lamuxadosinap.pdfIn PDF document text
    • https://valefeka.weebly.com/uploads/1/3/5/3/135345526/344e0f08b1155a.pdfIn PDF document text
    • https://vifejekim.weebly.com/uploads/1/3/5/3/135322606/bipobebil_sategub_doroxe_noxiduzajexed.pdfIn PDF document text
    • http://kpovli.ru/gartner_magic_quadrant_cloud_cost_managementof31s.pdfIn PDF document text
    • https://gugozakeku.weebly.com/uploads/1/3/4/5/134588211/supamofonusefek_depodebajilewez_lutowev_jasel.pdfIn PDF document text
    • https://xulexina.weebly.com/uploads/1/3/1/3/131398260/xafakaxojomipow_vanadukedatuvi.pdfIn PDF document text
    • http://genoray.pro/desperate_housewives_scriptfuwer.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/rabewiruzitewa/free_winrar_latest_version_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/iron_iii_nitrate_nonahydrate_safety_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/24067149735.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/7715395434.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/38979825846.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/wegajamuxatexumun.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_off0000de20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE20 4920 bytes
SHA-256: 77f258f62b921e53b1340aba2e4fdd1316292df49ae2f108e850ed4ac917342a
font_01_sfnt_off0000eed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED1 10796 bytes
SHA-256: 67b343b4581dbbee830ded0dbe7ef819e497b9f851321cf1c71b15723b2925f9

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