Malicious PDF — malware analysis report

Static analysis result for SHA-256 a66f676a18888bfb…

MALICIOUS

PDF

51.3 KB Created: 2020-08-03 21:20:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f9a4586ec5c2ea350aaa13748d252cf SHA-1: dc3afed664b9ab58f1db9d7e19fdd7d37a0c9819 SHA-256: a66f676a18888bfb056df6d73434ffb152cb0bf5db2a180efec427fa87c4670c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources hosted on platforms like Shopify. One of the primary links directs to a known malicious redirector at 'ttraff.ru', suggesting a phishing or malware distribution attempt. The document body itself is largely unreadable, but the presence of the malicious redirector and the sheer volume of links indicate a deliberate effort to lead users to potentially harmful content.

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.ru/pify?keyword=critical+path+method+example+questions+and+answers+pdf
    • http://files.gravityalternativemovement.com/uploads/1/3/0/7/130775760/8069884.pdf
    • http://files.zaidiecooper.com/uploads/1/3/2/7/132740511/7639881.pdf
    • http://files.porterfinancescam.greatwebsitebuilder.com/uploads/1/3/1/4/131437508/pabuvaso.pdf
    • http://files.scheffsound.com/uploads/1/3/0/8/130813108/zamotevazugere.pdf
    • http://files.jonathanmelvillepratt.com/uploads/1/3/0/7/130740378/874a32.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/32500938360.pdf
    • https://cdn.shopify.com/s/files/1/0434/2461/2509/files/33483756463.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/40603038184.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/crack_or_tweak.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/96037743775.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50306279194.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1261535930.pdf
    • https://cdn.shopify.com/s/files/1/0438/0635/9714/files/63552531150.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/19169946119.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/77312322125.pdf
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/wadexoserawe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/manoga.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/4163372628.pdf
    • https://cdn.shopify.com/s/files/1/0440/2325/1094/files/mining_diamonds_lyrics.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/
    • https://cdn.shopify.com/s/files/1/0440/2

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c42.bin
f55d6f76d42a71712310e9c71a58b0900a1ee5f795045f804f883f88dd926f24
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C42 5588 bytes
font_01_sfnt_off00008f28.bin
7013fcf75d4d2b500a26d7da6f50d49163f6266269a64810b66c491bda92fb03
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F28 10088 bytes
font_02_sfnt_off0000b1ad.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xB1AD 4324 bytes