Malicious PDF — malware analysis report

Static analysis result for SHA-256 83e4c5cbcf3dabf1…

MALICIOUS

PDF

42.6 KB Created: 2020-08-31 21:17:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be14a469352baffe6ec48c454faf6ef9 SHA-1: 98fd1788e2d5e1a64135e437ac56943fd19dfb7c SHA-256: 83e4c5cbcf3dabf1758a09fd5b4d3b7c2b5f82082b0a6813a058d67c26bb1014
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that masquerades as a movie download, but analysis shows it redirects to a known malicious URL. This is further supported by heuristics indicating a malicious redirector and a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains the malicious URL and references to movie downloads, reinforcing the lure.

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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/wix?keyword=chicken+run+hd+movie+free
    • https://cdn.shopify.com/s/files/1/0438/5826/4229/files/cymatics_video_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7073/files/low_income_housing_tax_credit_program_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0435/4169/2567/files/nofekixasovokeponuw.pdf
    • https://cdn.shopify.com/s/files/1/0462/4315/2032/files/biology_projects_for_class_12_on_genetics.pdf
    • https://cdn.shopify.com/s/files/1/0433/4537/9478/files/zujidej.pdf
    • https://cdn.shopify.com/s/files/1/0439/3995/4856/files/administracion_de_la_cadena_de_suministro_chopra_4ta_edicion.pdf
    • https://static.usrfiles.com/ugd/9374a7_3b7bce274ce04dddbc8c9de1aed9e9b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_642f0816fa57439dbeb6f076e749691f.pdf
    • https://static.usrfiles.com/ugd/b11f6d_9539d30dec8946d28b98587d67f37e81.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/federalist_10_study_guide_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/4543/7083/files/viperun.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_off00006ad4.bin
2180f24c767cab840290e56ec19d760ba6d359d9c67343f60a26ea617f8c365f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD4 4868 bytes
font_01_sfnt_off00007b3e.bin
a9853209ba711fd82ee66438d64f20cb225723461e931269ac12a5f3c57346df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3E 10260 bytes

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