Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e8c48ffd0895b83…

MALICIOUS

PDF

60.9 KB Created: 2020-08-04 13:30:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77c89d17449ebc7b1766abf1eafc398e SHA-1: 7e21ceb73334585065af5f58b64d8ce71197d302 SHA-256: 9e8c48ffd0895b83107487335c53a84170f6077769846a6aca9c5044130ad605
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. It also exhibits a PDF link farm heuristic, with numerous external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking PDF title, suggesting a lure to download a file. No scripts were extracted from this sample.

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.cc/pify?keyword=ultralight+aircraft+design+pdf
    • http://giribi.blissnmotion.com/uploads/1/3/0/7/130738848/567fbb620327d.pdf
    • http://files.konektis.ca/uploads/1/3/1/0/131070508/zepigegaxizi_gekegaga.pdf
    • http://sanoxuj.ohmylashuk.co.uk/uploads/1/3/1/3/131381204/nakoleda.pdf
    • https://cdn.shopify.com/s/files/1/0432/0644/3176/files/36163887491.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/fupenatobesi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7695/1957/files/gemigepavusamosipetexejur.pdf
    • https://cdn.shopify.com/s/files/1/0432/2240/1185/files/7421982272.pdf
    • https://cdn.shopify.com/s/files/1/0437/5642/1269/files/death_note_original_soundtracks.pdf
    • https://cdn.shopify.com/s/files/1/0431/7803/3313/files/pobudawimat.pdf
    • https://cdn.shopify.com/s/files/1/0431/7125/0333/files/83457022899.pdf
    • https://cdn.shopify.com/s/files/1/0433/4839/4142/files/sick_puppy_riptide.pdf
    • https://cdn.shopify.com/s/files/1/0437/1320/0282/files/uninstall_matlab_mac.pdf
    • https://cdn.shopify.com/s/files/1/0434/0105/2323/files/nunarolotetuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1660/files/65558070842.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/53857922479.pdf
    • https://cdn.shopify.com/s/files/1/0433/6150/1336/files/postal_exam_473.pdf
    • https://cdn.shopify.com/s/files/1/0432/7197/9172/files/relationship_marketing_bruhn.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a540.bin
36e12b0b30d333f73c60fee1c5bfd5bf34485be087375605e1214ddc0709a97b
pdf-font-stream PDF embedded font (sfnt) at offset 0xA540 5084 bytes
font_01_sfnt_off0000b674.bin
002c11d5731d422a707a3173858d12f81ca99985cb7f62bd6ce77b333d233892
pdf-font-stream PDF embedded font (sfnt) at offset 0xB674 9892 bytes
font_02_sfnt_off0000d850.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xD850 4324 bytes