Malicious PDF — malware analysis report

Static analysis result for SHA-256 087bb09bcd2e7d43…

MALICIOUS

PDF

238.8 KB Created: 2021-04-17 08:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 7321e2af09ecf1da72a83ed0fe26dc51 SHA-1: 892dbcd08882a0745b8272793717900f39745f00 SHA-256: 087bb09bcd2e7d43cde4e80ee23acd443c578fc1d53b0f7b8d99d63edd09edde
144 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a lure related to 'lyrics norah jones meaning' and urgency, directing users to a suspicious URL. ML classification and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://resalured.ru/strik?utm_term=carry+on+lyrics+norah+jones+meaning PDF link annotation
    • https://cdn.sqhk.co/jexerigix/ghqjhGb/toralovadovisinetodu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470409/normal_60677f28cf4be.pdfIn PDF document text
    • https://cdn.sqhk.co/tireronerogo/8kXlgjs/77389818836.pdfIn PDF document text
    • https://tojewenegekov.weebly.com/uploads/1/3/4/5/134502344/luzonapopaze.pdfIn PDF document text
    • https://mogoxolokelitaf.weebly.com/uploads/1/3/4/6/134645696/3978291.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/jAighdP/9013982088.pdfIn PDF document text
    • https://tizezesi.weebly.com/uploads/1/3/4/0/134041120/527111.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420235/normal_606d19fc985b0.pdfIn PDF document text
    • http://ditolazop.22web.org/bufizukowavogusipajej.pdfIn PDF document text
    • http://xonibiz.22web.org/xevofifefugeregomela.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501383/normal_5fec38ef769fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://217ba8a6-026c-4a9e-b1ce-2eadff0a4a08.filesusr.com/ugd/3d7af5_51b134c2002d44a7a59e3cc19b3b67d4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c30dd9a-946f-4ece-8cc4-bae5b1791b59/zevejilusizak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d398a26b-3f11-4c12-b5d4-eb5b58de2893/mississippi_common_core_standards_math_4th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a14f5bc5-af02-4820-85e9-3dd301097fd4/mr_heater_big_maxx_issues.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccf7a8bc-3fb6-4ad8-9e33-d6cd9051159a/sharepoint_2013_designer_workflow_deprecated.pdfIn PDF document text
    • https://6129906d-bc82-46a7-99f5-71793a58af3c.filesusr.com/ugd/d162e3_09061fb653f542d5996eba4c871bf9c0.pdf?index=trueIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000356ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x356FF 5296 bytes
SHA-256: 13eea390f16163d9cf9d3a9f39d5abcb079b087294d43696f96e12c9a566619a
font_01_sfnt_off000368e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x368E3 14732 bytes
SHA-256: 492d4a9ad189c6df620d5e58f623ff41973a4e1c1d1ce8dfac28d84eb993e739
font_02_sfnt_off000395f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x395F8 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

Open this report in the interactive analyzer, or submit your own file for analysis.