Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4b5a4a6b0acb318…

MALICIOUS

PDF

43.9 KB Created: 2020-08-22 20:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bbff2ac81366e252b0d2ec881c1b70a SHA-1: 54037609814940c47650a541ba0ba2220269fe75 SHA-256: e4b5a4a6b0acb318fd5cd071b21d1a68650d982990ef231dd52f67b3c046ebff
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.001 PowerShell

The PDF contains numerous links, including one to a known malicious redirector, ttraff.cc. The document body and heuristics indicate a social engineering lure, specifically a 'Browser extension / update installation lure' and a 'Visual download / call-to-action button lure', masquerading as a free PDF editor. The primary malicious URL is https://ttraff.cc/pify?keyword=adobe+acrobat+pdf+editor+free, which is likely used to deliver a secondary payload or redirect to a phishing site. The PDF also hosts a large number of links to other PDFs on cdn.shopify.com, potentially for SEO manipulation or to appear legitimate.

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/pify?keyword=adobe+acrobat+pdf+editor+free
    • http://files.650group.com/uploads/1/3/1/3/131379395/6306520.pdf
    • http://files.garysstorage.com/uploads/1/3/1/0/131070476/wijidagog.pdf
    • http://vanisevog.emmawilliamsdirector.com/uploads/1/3/1/6/131606289/386071.pdf
    • http://files.digitalworkshop.com.hk/uploads/1/3/1/4/131408103/9e63e.pdf
    • https://cdn.shopify.com/s/files/1/0438/3762/0381/files/pdf_to_word_free_download_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0429/4567/5420/files/analytical_reasoning_topics.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5303/files/zatezimapekusokuru.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/common_adjectives_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/9899/6889/files/control_system_theory_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/72715452159.pdf
    • https://cdn.shopify.com/s/files/1/0439/4971/9720/files/positive_psychology_of_love.pdf
    • https://cdn.shopify.com/s/files/1/0432/0886/8001/files/52525287725.pdf
    • https://cdn.shopify.com/s/files/1/0439/2199/7979/files/fizimad.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/tevori.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7206/files/givukoxapuvijiburiperosad.pdf
    • https://cdn.shopify.com/s/files/1/0435/6859/5112/files/mass_unfavorite_tweets.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e20.bin
c9a166de7f2e34591cbdab57ae38df875b618d88a44356821696a4335de5a7f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E20 5080 bytes
font_01_sfnt_off00006fed.bin
d5d29bcb8c1b573ca442fd33aee12ce19bcf2960036a47e53963bc99a960ed88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FED 5068 bytes
font_02_sfnt_off00008139.bin
d3c58f466c5c470f083f80f4240f1903a6d81b2bb12a03a9877517d09ca34062		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8139 9636 bytes

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