Malicious PDF — malware analysis report

Static analysis result for SHA-256 a60c3cd840f0ce2f…

MALICIOUS

PDF

36.8 KB Created: 2020-08-19 09:23:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b18629458c5295067b249f248cd21ce5 SHA-1: 1740df06942df9afc5114c025b69a08a6cd9a4ec SHA-256: a60c3cd840f0ce2fd39eda340dc2c87da2aca72129d8b877d8546037b1aaa415
128 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a redirector service (ttraff.com). This indicates a link farm strategy, likely intended to obscure the final malicious destination. The presence of a 'download button' heuristic further supports the lure aspect of this attack. The document body itself is heavily obfuscated and contains the redirector URL, suggesting it's part of the malicious workflow.

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.com/pify?keyword=happy+new+year+movie+song++masstamilan
    • http://files.authormsmiller.com/uploads/1/3/1/4/131409244/5767635.pdf
    • https://cdn.shopify.com/s/files/1/0436/0595/0626/files/about_us_template_for_travel_agency.pdf
    • https://cdn.shopify.com/s/files/1/0437/6284/3797/files/learning_to_fly_short_stories_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/4089/1292/files/moraxivuxosigajoruniroxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2684/8661/files/vusudovamidedefawozafibek.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/78535304919.pdf
    • https://cdn.shopify.com/s/files/1/0439/7616/3486/files/17484927457.pdf
    • https://cdn.shopify.com/s/files/1/0434/7261/7637/files/19878004494.pdf
    • https://cdn.shopify.com/s/files/1/0436/3337/7440/files/15966045954.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/13132773261.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56666804065.pdf
    • https://cdn.shopify.com/s/files/1/0439/9860/9566/files/hymenolepis_nana_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0433/8188/3047/files/bhagavad_gita_all_slokas_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/55144850935.pdf
    • https://cdn.shopify.com/s/files/1/0438/0088/7457/files/calcio_in_diretta_tv.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_off00005169.bin
2d9fcbb744047334bbfaaa259287ad26c055a224bf5282824a768324444d6b4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5169 5356 bytes
font_01_sfnt_off000063a3.bin
77b5d16019157df0f53642c31f9977d9e95a27d9bbb5f9121d0fc14d1de891a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x63A3 10264 bytes