Malicious PDF — malware analysis report

Static analysis result for SHA-256 a83d74410147abac…

MALICIOUS

PDF

47.8 KB Created: 2020-07-31 08:19:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87a0547136742ace0066bb171287a6e9 SHA-1: 3340f5c3e84256eaa67a08bafb8ec267aa056a86 SHA-256: a83d74410147abac0feb8574aff112af5b588c52282afdd385deb853d44c3c25
128 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including a critical finding of a link to known malicious redirector infrastructure. It also features a link farm of external PDFs, suggesting an attempt to manipulate search engine results or distribute further malicious content. The presence of a visual download button lure reinforces the deceptive nature of the document.

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.
  • 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=bruce+dickinson+biography+pdf
    • http://files.pro-help.co.uk/uploads/1/3/1/4/131482822/towojakolulaxax_lubepamikububo_fagajug.pdf
    • http://files.tlc-nanbpwc.org/uploads/1/3/1/4/131406372/3863976.pdf
    • http://files.practicingmdleaders.com/uploads/1/3/1/6/131607712/remefip.pdf
    • http://files.pro-help.co.uk/uploads/1/3/1/4/131482822/towojakolulaxax_lu
    • https://cdn.shopify.com/s/files/1/0432/5795/4464/files/dagoxurilapuruwimuxof.pdf
    • https://cdn.shopify.com/s/files/1/0435/9408/8611/files/binadixutawilenigufi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/sosopesuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2831/files/xovavogafar.pdf
    • https://cdn.shopify.com/s/files/1/0438/3657/1805/files/matomujubusalomofevuro.pdf
    • https://cdn.shopify.com/s/files/1/0436/2023/7475/files/28453660596.pdf
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/mavikudojobulapatesiji.pdf
    • https://cdn.shopify.com/s/files/1/0432/8351/3494/files/60707810568.pdf
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/dufaromafixixijono.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3622/files/67953487859.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_off00007d59.bin
395eddf2627d9d6e62e7b25a198fc2af0b72f15f3ffbec41aa384b0b9f7cb56b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D59 5544 bytes
font_01_sfnt_off0000902c.bin
d3d35d4528f456d1bf76fccb90baa67fa614d6c4a6f111500a7fd2c39a6e274e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x902C 10052 bytes

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