Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3aa4abf180e14ee…

MALICIOUS

PDF

44.4 KB Created: 2020-08-24 10:33:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d2b2dc8916b24a5667ed9ec16c5c0a7 SHA-1: dceb60d7e3bb6e74c6e1a3c92662f196f58a6187 SHA-256: c3aa4abf180e14ee6b38147a4c3b751dfbef3b7aae3260711338f76f4fe5a75d
160 Risk Score

Malware Insights

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

The PDF contains a link disguised as content related to an 'Android emulator for PC'. This link, found at https://ttraff.com/pify?keyword=android+emulator+for+pc+android+6.+0, redirects to known malicious infrastructure. The document also includes a large number of links to PDFs hosted on Shopify, likely part of an SEO link farm to obscure the malicious redirector. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's intent is to trick the user into installing something, which is a common tactic for malware delivery.

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.
  • 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
  • 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.com/pify?keyword=android+emulator+for+pc+android+6.+0
    • http://files.kevmarv.com/uploads/1/3/2/6/132681342/4392802.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/xurebex.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/alodia_nebres_app.pdf
    • https://cdn.shopify.com/s/files/1/0431/1298/8821/files/bbc_english_book_class_12_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0462/2906/1783/files/palufivinezo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/tumufofemedexewubixosev.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/tokotatulokanividaxexidos.pdf
    • https://cdn.shopify.com/s/files/1/0439/2163/7544/files/minna_no_nihongo_1_answer_booklet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/lujakalidisigipatokuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/18430686375.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/taforejunusepofoza.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/24591748607.pdf
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/wrc_107.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_off00006efa.bin
32cecebd384800f8d34dae8576a0a510b9819f829c6e7abcd322ab837f98a49f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFA 5440 bytes
font_01_sfnt_off0000815e.bin
01508fa203d4faa2a1a3eb25cde09c2b24230719f27c3e382f2cec7def2b80ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x815E 10196 bytes