Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c3320a14b87b159…

MALICIOUS

PDF

56.9 KB Created: 2020-07-24 14:47:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e84c77f631beb1f0b7a0576106e46c3 SHA-1: 789cac5c9824f150662ffb52ccb13b825450f7a5 SHA-256: 9c3320a14b87b159ae467b9c66adae98ab223e01855580c093235eb6749aa529
150 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.com'. Additionally, it exhibits a PDF link farm heuristic, with numerous links hosted on 'cdn.shopify.com', suggesting an attempt to obscure the final malicious destination. The ML classifier also strongly flagged this PDF as malicious. The document body is heavily obfuscated, but the presence of the redirector link and link farm indicates a likely phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=b%252F+r+report+nba
    • http://files.handmadebylouisa.com/uploads/1/3/0/7/130775827/25f7f89e987e0.pdf
    • http://files.jmn-i.com/uploads/1/3/0/8/130814642/badegumun-vafadivo.pdf
    • http://files.jeremymichaelcohn.com/uploads/1/3/2/7/132710732/bajuxezune-vudanizigakin-jifedikipexinet.pdf
    • http://files.virtuosoacts.com/uploads/1/3/2/6/132696465/wijufanikudezaz.pdf
    • http://files.visionillustration.com/uploads/1/3/0/7/130775135/1691847.pdf
    • http://files.virtuosoacts.com/uploads/1/3/2/6/132696465/wijufan
    • https://cdn.shopify.com/s/files/1/0433/8237/4561/files/doluropufutowapamekuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/6550/6966/files/55605428545.pdf
    • https://cdn.shopify.com/s/files/1/0436/2502/1603/files/51195818838.pdf
    • https://cdn.shopify.com/s/files/1/0427/5788/2022/files/feminazumoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/dibatinasu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/97032828727.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1660/files/75300519193.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/dadidiminutavovajusudagud.pdf
    • https://cdn.shopify.com/s/files/1/0431/9045/2387/files/lujumofa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdf
    • https://cdn.shopify.com/s/files/1/0435/3405/7621/files/13815274225.pdf
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/39224889207.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_off00008d03.bin
16b54adbf3b7620a82e19544e93264c69c37dc415985e0c2261bdd81e02d9bde
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D03 4568 bytes
font_01_sfnt_off00009c86.bin
a70b324a416a80d428ce24a70f5401994e8f4cba6d71efd2c64f918ea69d8dde
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C86 10784 bytes
font_02_sfnt_off0000c19c.bin
b118ad4a5f0f66e944d0a6e82a0dad6050c27e77cb1eabf64d07f40874ae21b7
pdf-font-stream PDF embedded font (sfnt) at offset 0xC19C 16080 bytes