Malicious PDF — malware analysis report

Static analysis result for SHA-256 e668a5034fd21cd8…

MALICIOUS

PDF

46.0 KB Created: 2020-08-19 09:33:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b44d8bfa83db79c93619ac96f8ac4242 SHA-1: ae45051be1b32d0534c0d55d565449241a522b8c SHA-256: e668a5034fd21cd89d12ef345df1f93b57f3993244599fac1aeb03cb9a3833ae
150 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a movie download, which is a common social engineering tactic. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this link points to known malicious infrastructure. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute multiple malicious links. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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=commando+2013+full+movie++in+tamil
    • http://pejibiz.lopatswimming.org/uploads/1/3/0/8/130814124/1b1c796d653c6b.pdf
    • https://cdn.shopify.com/s/files/1/0434/1917/3029/files/tuberculosis_prevention.pdf
    • https://cdn.shopify.com/s/files/1/0437/9174/5175/files/99073252914.pdf
    • https://cdn.shopify.com/s/files/1/0428/7037/4559/files/bowovaxebavaluwumo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3911/3895/files/drawing_human_anatomy_giovanni.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/neriferatupumuterosesu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6231/9518/files/80294015825.pdf
    • https://cdn.shopify.com/s/files/1/0429/5688/2086/files/woxubi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4280/files/aha_acls_guidelines_2016.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/cyanide_and_happiness_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7218161301.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/wovuturinox.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_off000060a9.bin
eb13a62e31125f5b58bf22b3f13bc3329a715b890db8d75b591b5613dff67f6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x60A9 5232 bytes
font_01_sfnt_off00007270.bin
3912930703d9083a8d445a85ee6ed77d9aaadad0772aac0983c443dd4615027e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7270 10352 bytes
font_02_sfnt_off00009617.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6
pdf-font-stream PDF embedded font (sfnt) at offset 0x9617 16164 bytes