Malicious PDF — malware analysis report

Static analysis result for SHA-256 5691dd4ad4b17fca…

MALICIOUS

PDF

58.1 KB Created: 2020-08-13 22:08:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ffadc7cd5589709608e0b77de64a5d6 SHA-1: b3dac61197543658915e112af1be8dc223c2e3eb SHA-256: 5691dd4ad4b17fca5b9ea223c9143a47bb97d6a0f99c229505263d484dd667cb
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.com/pify?keyword=hearthstone+arena+guide+september+2019', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a Hearthstone guide and the malicious URL, suggesting a lure to redirect users to malicious content. 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.com/pify?keyword=hearthstone+arena+guide+september+2019
    • http://ripixitiv.msqg.org/uploads/1/3/1/8/131856369/winaful.pdf
    • http://files.dovesembrace.com/uploads/1/3/2/7/132740463/226b2fe89.pdf
    • http://files.ingridbego.com/uploads/1/3/1/6/131636889/nijixu_doliwures_jeduvaniri_mokonin.pdf
    • http://tobobejun.karenfeiling.com/uploads/1/3/1/3/131398140/9203866.pdf
    • https://cdn.shopify.com/s/files/1/0449/7919/1966/files/abbyy_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/9452/2523/files/tonokadogilubaladimejiwu.pdf
    • https://cdn.shopify.com/s/files/1/0439/0898/9096/files/28502094866.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/58204576029.pdf
    • https://cdn.shopify.com/s/files/1/0434/4732/0728/files/jaketofadukarerudor.pdf
    • https://cdn.shopify.com/s/files/1/0434/4286/4294/files/safakexaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/5098/2805/files/wipezuguxego.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/35850773304.pdf
    • https://cdn.shopify.com/s/files/1/0431/6423/7988/files/75415691745.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6655/files/astronomy_for_dummies_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/ruxatipezewodolugigozur.pdf
    • https://cdn.shopify.com/s/files/1/0440/9258/8184/files/ar_735_11_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/5879/8492/files/gatugosifikewopafupafet.pdf
    • https://cdn.shopify.com/s/files/1/0427/8432/5798/files/cassava_flour_processing.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_off00009352.bin
23e590c513685c8e1168769eeb808337397f153a83a9f79b6d8c922b6c486ec4
pdf-font-stream PDF embedded font (sfnt) at offset 0x9352 2944 bytes
font_01_sfnt_off00009dc9.bin
faf9ee799f16f4a7911424e8f5e8c6bca9b106d5123ab9c9228577f96e770f85
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DC9 5924 bytes
font_02_sfnt_off0000b1c2.bin
d193bbd22de29933bb295f3728909a80743a145bf42df532a88451f2d2fb61e2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB1C2 12120 bytes