Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f48523ddc4b8dfb…

MALICIOUS

PDF

410.5 KB Created: 2020-08-11 02:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9d4c1780aec60f57a9389d5d7ea3fe3 SHA-1: c0399392013db26f3286174a6e3771f09dcfef16 SHA-256: 2f48523ddc4b8dfbcfc34ce2c9d9d8ccacf9684521c97310a53a1590c3d56d9d
88 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a malicious redirector link to 'https://ttraff.ru/pify?keyword=asciidoc+pdf+footer', identified by a critical heuristic. The document also impersonates a cloud document sharing service and uses an urgency lure, suggesting a phishing attempt. The presence of wkhtmltopdf in the authoring application and the obfuscated document body content indicate a crafted malicious document designed to trick users into visiting the malicious URL.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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
  • 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://ttraff.ru/pify?keyword=asciidoc+pdf+footer
    • http://files.yarahtraining.com/uploads/1/3/0/7/130775129/woxibamoru_medojofez_fajolomabej.pdf
    • http://files.theironlions.com/uploads/1/3/2/6/132695325/73fbf408cfc5d72.pdf
    • http://kalenuni.teaching-entrepreneurship.com/uploads/1/3/1/6/131607712/kegexenive.pdf
    • http://files.plasticactionuk.co.uk/uploads/1/3/1/8/131871568/nulufonol.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2626/files/lspdfr_callouts_0._4._2.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/sarokunufigagesok.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/penom.pdf
    • https://cdn.shopify.com/s/files/1/0454/4171/2286/files/10715719009.pdf
    • https://cdn.shopify.com/s/files/1/0428/8171/2287/files/nidalee_pro_builds.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5561128363.pdf
    • https://cdn.shopify.com/s/files/1/0447/9506/8567/files/essential_idioms_in_english_robert_dixson.pdf
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/kobafetenujukif.pdf
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/vocabulary_definition_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89573664631.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72438278193.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/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005f03a.bin
0f589e5f15633df266ee4661c604c4754297dc82b7093fa550f2a1964f635560		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F03A 4896 bytes
font_01_sfnt_off000600ea.bin
72a3fe65f0a21df30f240897224061cfa351088b80a4eb601fb5defb198ec993		 pdf-font-stream PDF embedded font (sfnt) at offset 0x600EA 2268 bytes
font_02_sfnt_off00060afc.bin
97fc4abaeb751d734af5a9fef784bcd6d17d714beb55393a2bd872fdcf9db8fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60AFC 17972 bytes
font_03_sfnt_off000642d7.bin
b7aeb12f837738e9d19fe99d097401d7ba97d97b3af32665d43398abeb3b3de4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x642D7 16456 bytes

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