Malicious PDF — malware analysis report

Static analysis result for SHA-256 85640f4029819258…

MALICIOUS

PDF

41.2 KB Created: 2020-08-03 02:54:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e64a386344571607b904e06e945dd31 SHA-1: c325d332a8df928f045d75cea91bae6271c7a41b SHA-256: 85640f40298192585a9897d16c0936cb0bca26f947fcce1c3da9677b197c97aa
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.com'. Another critical heuristic identified a large number of external PDF links, suggesting an SEO link farm. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=browser+detection+javascript', reinforcing the malicious redirector finding. The primary attack pattern appears to be luring users to malicious sites via these links.

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=browser+detection+javascript
    • http://files.bvwthespot.com/uploads/1/3/1/8/131856454/6098159.pdf
    • http://files.hollingsworthhemp.com/uploads/1/3/1/4/131438847/boxawepor-mozomopis-zomomabugi-bizomogotogop.pdf
    • http://files.chemistrywithdrjames.com/uploads/1/3/0/7/130775953/pubowasafo_dizukekotobijak_vonikij_xeposisa.pdf
    • http://files.designingwithstoneportugal2018.com/uploads/1/3/1/1/131163564/lanadikikeziran.pdf
    • https://cdn.shopify.com/s/files/1/0432/1568/3743/files/vios_l2-_adventerprisek9-_m._03._2017._qcow2.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/rolixupawabatewel.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/dawefokasesezebigitinovu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/jinuvelumezopuna.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8890/files/99109750138.pdf
    • https://cdn.shopify.com/s/files/1/0434/3290/2806/files/posuzeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8057/files/kajoteka.pdf
    • https://cdn.shopify.com/s/files/1/0433/9964/3286/files/46389031191.pdf
    • https://cdn.shopify.com/s/files/1/0431/7678/8134/files/butilobobivikozuguju.pdf
    • https://cdn.shopify.com/s/files/1/0435/1895/1576/files/dagudijivanunopazijepuwar.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/13258024437.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/29101779828.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_off00006331.bin
d7662cf0ea3bd3a2d866a8dff8bbf1ec371cd41417a628872bc36bae8d2d128d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6331 5312 bytes
font_01_sfnt_off0000756e.bin
6ae3930351e202eab2027e07e97dd0f9d8e1fa73ba3b196adf2ebb1eef0bc372
pdf-font-stream PDF embedded font (sfnt) at offset 0x756E 10128 bytes