Malicious PDF — malware analysis report

Static analysis result for SHA-256 336dd8439931ddd2…

MALICIOUS

PDF

106.4 KB Created: 2021-03-25 05:04:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: edf2592f71cb5153955228f30dd21ba4 SHA-1: 734abfc62de9e237ade3e3082f78cf1bacbdd4d2 SHA-256: 336dd8439931ddd2613775aa2a797368500deb557be4a2925874b2158b65407c
196 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam, employing a lure related to lottery winnings or parcel delivery. It contains numerous external links, suggesting an attempt to redirect users to malicious websites or phishing pages. The ClamAV detection and ML classifier further support its malicious nature, indicating it likely serves as a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://midufefew.ru/aws?utm_term=best+leaf+vacuum+mulcher+gas
    • https://cdn-cms.f-static.net/uploads/4388814/normal_603f8c4f17e8d.pdf
    • https://static.s123-cdn-static.com/uploads/4446490/normal_5ff2d60765dfd.pdf
    • https://dusibijerike.weebly.com/uploads/1/3/2/6/132695870/wufedusarap.pdf
    • https://cdn-cms.f-static.net/uploads/4445869/normal_604a6673718cc.pdf
    • http://kugoramex.iblogger.org/lifesmart_infrared_electric_fireplace_stove_heater_with_remote_reviews.pdf
    • https://cdn-cms.f-static.net/uploads/4412377/normal_5fea0ae1e2f5a.pdf
    • http://zumanidoxup.medianewsonline.com/fanijudaxarudamosujojew.pdf
    • https://salufisudad.weebly.com/uploads/1/3/2/6/132695294/pufudiwexewasid.pdf
    • http://galosidijixiwu.mypressonline.com/zimobomafo.pdf
    • http://wogavuxemadirof.iblogger.org/31690684877.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wofaketizezoja.epizy.com/manual_archive_outlook_2019.pdf
    • https://f635e5d9-31b1-4f19-b758-7a623be10181.filesusr.com/ugd/6cf0f5_6d63552209924185a290bf2f687b0c38.pdf?index=true
    • https://f8b2de7a-6012-4721-b8f1-df5267d6bb95.filesusr.com/ugd/8ebb60_b4fc4fa831b041a2822fa196f8be449a.pdf?index=true
    • https://51fd5013-30c4-43d1-89ce-86564632a3b5.filesusr.com/ugd/9f06f8_79f1dc7a386e4afa9ab07a612edfc02c.pdf?index=true
    • https://d1159ab4-cbf5-42eb-897b-83a5e94cd7da.filesusr.com/ugd/536122_afde98ba33754e4ea997614a01d94eba.pdf?index=true
    • https://8d59741e-369e-44be-b01e-8fbcb09d2d01.filesusr.com/ugd/7cefa9_1c51e5b76413422195296ae10b158998.pdf?index=true
    • https://75a697d3-84f0-44cf-bab9-f05e37020c50.filesusr.com/ugd/7c3584_ef93c9aa65ee4635bcacf9f5ada80296.pdf?index=true
    • https://1923692e-f727-4f58-80a8-3583160180e3.filesusr.com/ugd/c4ccc4_71bae8ac504f42af903fe0d4fd8c3428.pdf?index=true
    • http://defakulid.atwebpages.com/global_bpo_industry_report.pdf
    • http://kosezofejesuxef.atwebpages.com/bepem.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015fd8.bin
110b472ef14adb7a526947b3496f54ce70f22013cbbfd485cdbca1dbff209060		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15FD8 5404 bytes
font_01_sfnt_off00017221.bin
dd3a5835107bb001604823cf7227b1997af2ee4cd90dac44fee8f86d2b258ce6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17221 12784 bytes

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