Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d6d0fa697ad519…

MALICIOUS

PDF

50.0 KB Created: 2020-08-29 21:58:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80f8f57cf369af38add1101ec0abafc3 SHA-1: a2e4f004192c908f1e066848c1f76ce4ee1c8f2a SHA-256: d5d6d0fa697ad519b5ee8346a7acf733d9f42b747d5b0a2e1ed309520587edef
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, disguised as a free manual download. The PDF also contains a large number of external links, many of which point to user-uploaded content, suggesting a link farm or SEO poisoning tactic. The document body contains garbled text along with a URL, further indicating a malicious lure.

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/wix?keyword=manual+for+nikon+d5000+free+download
    • https://static.usrfiles.com/ugd/b8c837_03fabe0c4f734b85b60c8473cbeac064.pdf
    • https://static.usrfiles.com/ugd/accd1f_d5b6b0053297482185a4c168b48d874b.pdf
    • https://static.usrfiles.com/ugd/ae15ca_986194802f2942169cd0c6cd8f41de72.pdf
    • https://static.usrfiles.com/ugd/0bcf16_ab15bb02f9e74f20bcef5fdf1fb65f62.pdf
    • https://cdn.shopify.com/s/files/1/0429/3584/5017/files/billing_warnet_untuk_android.pdf
    • https://cdn.shopify.com/s/files/1/0437/9030/3381/files/coombs_test_principle.pdf
    • https://cdn.shopify.com/s/files/1/0441/0834/9592/files/33208833131.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/toveve.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/bengali_rannar_boi.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf389887f0244118b4bec65dfc8c4ee2.pdf
    • https://static.usrfiles.com/ugd/b8c837_dbaaeef765e44aec8c019e6d1b63adac.pdf
    • https://static.usrfiles.com/ugd/b8c837_cfed0368144b4d54898b2bde364a1518.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d2c6123146c4d618dc198f64f0fa3c5.pdf
    • https://static.usrfiles.com/ugd/b8c837_341c009ad4dc49fa968a60bcb5cf96e1.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/57807846446.pdf
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/zexerawomokimaxawenuzav.pdf
    • https://cdn.shopify.com/s/files/1/0434/3575/3639/files/pisixazusiwinibawelitixam.pdf
    • https://cdn.shopify.com/s/files/1/0431/4061/2262/files/48616188234.pdf
    • https://cdn.shopify.com/s/files/1/0435/8691/2413/files/irc_code_for_geometric_design_of_highways.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_off000078ff.bin
000d617e1004dd2f139a4931c2d26f8bbbeae13eedb2995cbf3666a6d7d3b21e
pdf-font-stream PDF embedded font (sfnt) at offset 0x78FF 5148 bytes
font_01_sfnt_off00008aaf.bin
810a372183f7cfa680aed97978518254314229690e188f8100c4340c6b72ce24
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AAF 15680 bytes