Malicious PDF — malware analysis report

Static analysis result for SHA-256 e018a5538028d6a9…

MALICIOUS

PDF

58.6 KB Created: 2020-08-10 09:25:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ddc3031ec52c3d42a6d6905b06d4d2a SHA-1: e6b05cce9f2727cbb270d00a0a85f6ca65f284e3 SHA-256: e018a5538028d6a97d6080f26150bdc199e737810fdb5df04154498143029ead
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=possessive+pronouns+in+arabic+pdf', suggesting a lure to a malicious site disguised as a document about Arabic pronouns. No scripts were extracted, limiting further analysis of payload delivery.

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=possessive+pronouns+in+arabic+pdf
    • http://files.hamlinhomes.com/uploads/1/3/1/4/131453241/sonutowowiwiv_jujebepixusijav_datasebone_tawujuzam.pdf
    • http://files.dixielandbulldogges.net/uploads/1/3/1/1/131163684/6957313.pdf
    • http://files.greyheart.org/uploads/1/3/0/7/130740316/vikuradun_vejuwumubip.pdf
    • http://files.mountaindellfarm.com/uploads/1/3/0/7/130739379/durozujesib-mubalazixera-remitapuva.pdf
    • https://cdn.shopify.com/s/files/1/0431/7108/6485/files/wigiwepefalidekuvavomekux.pdf
    • https://cdn.shopify.com/s/files/1/0436/0955/5107/files/como_hacer_referencias_bibliograficas_apa.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/86957091224.pdf
    • https://cdn.shopify.com/s/files/1/0435/7236/3432/files/sanidad_en_camelidos_sudamericanos.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/15353694410.pdf
    • https://cdn.shopify.com/s/files/1/0437/2480/0154/files/how_to_clear_cache_on_macbook_air.pdf
    • https://cdn.shopify.com/s/files/1/0439/6836/4702/files/55204668191.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34456372212.pdf
    • https://cdn.shopify.com/s/files/1/0439/3772/6622/files/nuzetum.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/50272002596.pdf
    • https://cdn.shopify.com/s/files/1/0431/6889/1040/files/zapasomokupu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8168/6439/files/jajenitive.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000a5b7.bin
ee407bbcb5cd70f059c6eb92b69b8c90cdc7f021b6433b3ddb59c5ae209055cf
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA5B7 23400 bytes
font_00_sfnt_off00007225.bin
6ecd730242235f74acf0643ff37341ba56a497d5d775cbefcf6956d666869832
pdf-font-stream PDF embedded font (sfnt) at offset 0x7225 5120 bytes
font_01_sfnt_off00008396.bin
5783bb0b67727922b9a355186b3db151eacdc15b62b24272f92a28f5f87b2186
pdf-font-stream PDF embedded font (sfnt) at offset 0x8396 9920 bytes
font_03_sfnt_off0000cec7.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC7 4324 bytes