Malicious PDF — malware analysis report

Static analysis result for SHA-256 eebc283a4e278d64…

MALICIOUS

PDF

35.9 KB Created: 2020-08-06 06:44:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e40a7f245397d4b7786ffe3a16c9f6d SHA-1: d0d3bd1b6e144e642fc97ebb297bab580b3d116c SHA-256: eebc283a4e278d647a0fbbdcadcdee46a5ca9ebfb72820f8ffa8288dad2c25bc
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with the primary redirector URL being identified as malicious. The document body, though heavily obfuscated, contains references to the malicious URL and other URLs hosted on Shopify, suggesting a link farm or SEO poisoning attempt. The presence of numerous external links points towards a delivery mechanism designed to redirect users to potentially harmful content.

Heuristics 3

  • 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.
  • 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.
  • 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=acomaf+pdf+free
    • http://vawuvosa.stayfrosty.co/uploads/1/3/0/7/130775607/penamebibirov_lanatiba_bojijumekidexe_pexepofopumake.pdf
    • http://files.mrmenth.com/uploads/1/3/1/4/131409037/6256250.pdf
    • http://files.marinamaxwellauthor.com/uploads/1/3/1/3/131379696/e10fde0143382f6.pdf
    • http://files.quailhollowfarmpygoragoats.com/uploads/1/3/2/7/132740730/xasokoxifot-loximi.pdf
    • http://files.carinamagazzeni.com/uploads/1/3/1/8/131856195/kezanojaxonexewel.pdf
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/steady_state_sinusoidal_analysis_using_phasors.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/zenugudikiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/518797332.pdf
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/44235972563.pdf
    • https://cdn.shopify.com/s/files/1/0437/5108/0087/files/arabic_calligraphy_lessons.pdf
    • https://cdn.shopify.com/s/files/1/0434/4990/9415/files/vapaxul.pdf
    • https://cdn.shopify.com/s/files/1/0433/7896/6686/files/carpal_tunnel_syndrome_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/36362682418.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21883700101.pdf
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/vorojiwudomobibo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4635/4592/files/favikotarogepuvef.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f99.bin
ea43aa4b6af703f899edd9b18fadf4e2c2303d704bd7e94861380020d8935271		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F99 5080 bytes
font_01_sfnt_off000060cc.bin
a5f3117bea76d28ee3fce7938a9071aeef84259052772ea2713b0b312dddada5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CC 10112 bytes

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