Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcb2ebcd4bfeacc9…

MALICIOUS

PDF

39.1 KB Created: 2020-08-25 10:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04fdb9e1d11ab18d87f9cb35137fcb81 SHA-1: c83a7a888affa29a386ccf427512a22724f77a3a SHA-256: dcb2ebcd4bfeacc91a3f09609bf7027ecff63d07ddef2ae8f04a2a274d7a16ad
150 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, disguised as a movie song download, redirects through 'ttraff.com', a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure for users to click on it. The ML classifier strongly indicates maliciousness.

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=chirutha+movie+naa+songs
    • http://files.tianishiloh.com/uploads/1/3/1/3/131384568/f21517.pdf
    • https://cdn.shopify.com/s/files/1/0432/7594/4091/files/liwevonedug.pdf
    • https://cdn.shopify.com/s/files/1/0428/6719/6063/files/dipib.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/pasetin.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5755/files/torewujowiwevu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5113/8715/files/74081734054.pdf
    • https://cdn.shopify.com/s/files/1/0433/9820/1502/files/2151549943.pdf
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/turbocad_deluxe_2017.pdf
    • https://cdn.shopify.com/s/files/1/0434/3159/2088/files/wasazugulotezeloji.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/13406004280.pdf
    • https://cdn.shopify.com/s/files/1/0434/4938/5110/files/acknowledgement_form_for_received_items.pdf
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/50606916075.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000504c.bin
3ecb04b13ffbd0852e3751ae4cf7f091262f2a1b90f1eee208549ebabe4a41cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x504C 5032 bytes
font_01_sfnt_off0000614d.bin
d53ae07f16ee95e533d3f7b06c18212248d2f2e54ffcaab461dd3c8ad8d4cade		 pdf-font-stream PDF embedded font (sfnt) at offset 0x614D 14384 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.