Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1f4d99c59958220…

MALICIOUS

PDF

46.6 KB Created: 2020-07-22 01:28:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 871bc9ad697e0f8b6b400b108cb262c8 SHA-1: 2ce79f3fcf9c97a130bf5255dbd1d8e33638d029 SHA-256: b1f4d99c59958220c5f6dd77a56a342dc4c5bb31bb2ce0b16a4d1e6684061da8
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link and a mass of external PDF links, suggesting a link farm or redirection attempt. The presence of a 'download button' heuristic further supports a lure-based attack pattern. The primary malicious URL identified is ttraff.cc, which is known for redirecting to malicious content. The document body is heavily obfuscated and does not provide clear textual intent.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/wb?keyword=blank%20index%20page%20pdf%20download
    • http://files.webnova.net/uploads/1/3/1/8/131857655/xazozez-tedopadomape-pesapolotu-donutelizedul.pdf
    • http://files.myprojectindia.org/uploads/1/3/1/3/131398598/paduvufuzizile.pdf
    • http://files.beanashtangi.com/uploads/1/3/0/8/130874338/vidizuguv.pdf
    • http://files.beanashtangi.com/uploads/1/3/0/8/130874338/vi
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34680977850.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30151397197.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/tikijeteput.pdf
    • https://cdn.shopify.com/s/files/1/0432/2105/7700/files/80304402549.pdf
    • https://cdn.shopify.com/s/files/1/0437/2827/3562/files/74627081389.pdf
    • https://dajajotunur.files.wordpress.com/2020/07/roruporugetamafi.pdf
    • https://zaludevibam.files.wordpress.com/2020/07/zibobuviwarigajag.pdf
    • https://tuvibusexof378215611.files.wordpress.com/2020/06/70564077121.pdf
    • https://retisabu.files.wordpress.com/2020/07/36969285053.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6561/files/32534928692.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/3554464864.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fesulemenakasisot.pdf
    • https://cdn.shopify.com/s/files/1/0434/1566/6840/files/ratedanotuxesolilosaneko.pdf
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/58397719845.pdf
    • https://cdn.shopify.com/s/files/1/0432/5641/4363/files/73348101289.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/pagokujaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/41255620418.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_off00007957.bin
eb75d05edd655a8bf4932c20527192bb62ee7be6f7a5f8ec0f76f73b2d4cd38a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7957 4916 bytes
font_01_sfnt_off00008a34.bin
1e38bbe2cab006e41650d566256dd9b1723b9ca476f232bdd3605b83e8372b00
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A34 10188 bytes