Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdc6ba1fa7d9a2f7…

MALICIOUS

PDF

36.3 KB Created: 2020-08-18 21:42:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5438f19f0dcc5d849c48016270284af5 SHA-1: 31a40307f8b3d0763951ae434d18861f3a2e6be4 SHA-256: fdc6ba1fa7d9a2f7656952cd37373cd6a08f53fd76565974b12170624e275b95
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with many pointing to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector infrastructure, suggesting a malicious intent behind the link farm. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking PDF filename, further supporting the malicious link farm hypothesis. No scripts were extracted from this sample.

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.ru/pify?keyword=conditional+songs+esl+worksheets
    • http://files.petetherockman.org/uploads/1/3/0/7/130775892/rowixaxorixuninebopi.pdf
    • http://bupegi.snipersboosters.org/uploads/1/3/0/7/130775654/bebewirem.pdf
    • http://wewifow.therapistsmap.com/uploads/1/3/0/8/130814328/8530a706.pdf
    • https://cdn.shopify.com/s/files/1/0437/0595/8565/files/adobe_after_effect_cc_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/3028/1377/files/gokivagez.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/14963314741.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/cleenol_lift_wax_free_polish_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/fuwugerulijulonapako.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/17958246786.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/rijilejek.pdf
    • https://cdn.shopify.com/s/files/1/0429/5160/6435/files/fepewiwimusikopupem.pdf
    • https://cdn.shopify.com/s/files/1/0431/4680/5404/files/kawaju.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/fire_suppression_systems_for_server_rooms.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/bootstrap_website_templates_github.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_off0000508b.bin
6e4fc7e199bd0ec916f618b2d9a0c3f7ff38ca8dcdf2b41a48777035f21c2221		 pdf-font-stream PDF embedded font (sfnt) at offset 0x508B 5148 bytes
font_01_sfnt_off0000621a.bin
82bf9dfb7b1184216e8d2828a28ebfa3ab4c248e221e699acb8112c1eae894fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x621A 10228 bytes

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