Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a711e3ea40a6235…

MALICIOUS

PDF

59.7 KB Created: 2020-08-27 18:43:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58ac43523b24e24d8d557c59afc1254b SHA-1: fb6e3fa285f39ea57f6b06670f3acaa2218adaea SHA-256: 8a711e3ea40a623546119fbc33fed2e60e2ab7c7d1273e5a227669a03d662da6
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, many of which point to a redirector service. The primary redirector URL is https://ttraff.com/pify?keyword=convertir+de+jsf+a, which likely leads to further malicious destinations. The document body contains garbled text and embedded URLs, suggesting it is designed to lure users into clicking malicious links rather than providing legitimate 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.com/pify?keyword=convertir+de+jsf+a
    • http://files.alisonrossphotography.com/uploads/1/3/0/7/130775698/rufinomojafiz.pdf
    • http://razalag.corkhives.com/uploads/1/3/1/4/131437237/tidiwawab.pdf
    • http://files.tinagutierrezartsphotography.com/uploads/1/3/0/7/130775383/remax-taxopugazaledu-fuluxibejurifuj-lavosiraleset.pdf
    • http://files.berrydigitalsolutions.com/uploads/1/3/1/4/131437689/widexan.pdf
    • http://files.bearcrack808.com/uploads/1/3/1/4/131438161/roguno_puteriremitasez_nototobasu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2266/4348/files/88109950215.pdf
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/assembly_language_programming_8086_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nedodakamilutejevojive.pdf
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/black_and_decker_weed_wacker_string.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8541/files/hex_code_colors.pdf
    • https://cdn.shopify.com/s/files/1/0445/4694/9279/files/ethylene_dichloride_msds.pdf
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/blue_blue_eyes_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/71710286924.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86562581376.pdf
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/sadesutopovowuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/3263/2730/files/abcd_movie_bgm_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0432/6490/1270/files/luwov.pdf
    • https://cdn.shopify.com/s/files/1/0431/4585/5137/files/ellipse_algorithm_in_computer_graphics.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_off00009d5f.bin
711bd9575eb2c4749cade840911de3e1716da4d71cc5d728b8c5ccbe13b3ca13
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D5F 4912 bytes
font_01_sfnt_off0000ae29.bin
cdb1ee772e53545bc05657646cfface95fc7e885ce763f9029fda1e9dabe87a1
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE29 17044 bytes