Malicious PDF — malware analysis report

Static analysis result for SHA-256 adb954926128b5c7…

MALICIOUS

PDF

51.8 KB Created: 2020-08-07 02:20:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9385e328ee428b8a7b1055149f17d9f5 SHA-1: 1d082eef091e2a180c7bd2f2ae818fe4c9823fe5 SHA-256: adb954926128b5c73c626cd0c5d26113305a1e9a30d9ae3cfe091faadecb1123
120 Risk Score

Malware Insights

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

The PDF file contains a deceptive document body and numerous embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final malicious destination. The document body itself is obfuscated but contains the string 'Amman songs lyrics in tamil pdf', suggesting a lure to attract users to click on the malicious links.

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=amman+songs+lyrics+in+tamil+pdf
    • http://files.alessertraveledroad.com/uploads/1/3/1/4/131438392/tikugozipixogililime.pdf
    • http://files.sewitupdesigns.com/uploads/1/3/1/8/131871494/2257144.pdf
    • http://files.alchemy001.com/uploads/1/3/0/7/130775953/6272908.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pisanebemewamabojesodid.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/tedesogaguwedifijas.pdf
    • https://cdn.shopify.com/s/files/1/0430/6875/2023/files/53817682850.pdf
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/98707125886.pdf
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/gidijorutubevazabudam.pdf
    • https://cdn.shopify.com/s/files/1/0429/9603/9833/files/vukib.pdf
    • https://cdn.shopify.com/s/files/1/0445/5032/4388/files/biographie_de_guy_de_maupassant.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/6384961540.pdf
    • https://cdn.shopify.com/s/files/1/0433/6127/1959/files/citadel_white_book.pdf
    • https://cdn.shopify.com/s/files/1/0448/1590/9026/files/aryabhatta_biography_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/vugonig.pdf
    • https://cdn.shopify.com/s/files/1/0433/8889/5386/files/40391222092.pdf
    • https://cdn.shopify.com/s/files/1/0430/6485/2634/files/exercicios_bissetriz_7_ano.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_off000089df.bin
e4d98152d7d06c8350be60834839cc587acdb4894102e12701399b7ac9af152b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89DF 5564 bytes
font_01_sfnt_off00009cb9.bin
f574417d8c812787fda0d45f99c263c439a333ebe08d350e7cdccb3b4e4025e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB9 10952 bytes

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