Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb4eae64c32817b1…

MALICIOUS

PDF

43.7 KB Created: 2020-08-04 09:22:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 947f8711045855c696b73355ee85ab8c SHA-1: c6e50838ca14f8fc50775710212e987ae6886777 SHA-256: eb4eae64c32817b1d99eadeea7dfe20730a90e277a05e95f2be25af8c70e00c3
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on Shopify, suggesting an attempt at SEO manipulation or driving traffic to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=iron+carbon+diagram+mcq+pdf'. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The file's purpose appears to be to redirect users to potentially harmful content.

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=iron+carbon+diagram+mcq+pdf
    • http://files.acemgaming.com/uploads/1/3/0/9/130969045/roxej.pdf
    • http://files.blindsnscreenswhangarei.biz/uploads/1/3/1/3/131379732/f6eae4e603caab.pdf
    • http://files.isabeltamouro.com/uploads/1/3/1/1/131163953/baluruvi.pdf
    • http://rekuwes.nhconstructionlaw.com/uploads/1/3/2/7/132710592/97144d050fd0765.pdf
    • https://cdn.shopify.com/s/files/1/0439/0138/6920/files/50894454608.pdf
    • https://cdn.shopify.com/s/files/1/0429/8211/3433/files/nizutisoraxovo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73470001672.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/30547510987.pdf
    • https://cdn.shopify.com/s/files/1/0433/1808/3742/files/refobovumobaladofuxeneve.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6964/files/morurunamesoputes.pdf
    • https://cdn.shopify.com/s/files/1/0433/9521/9623/files/sufidu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2541/5843/files/garrys_hood_auto_clicker.pdf
    • https://cdn.shopify.com/s/files/1/0429/1382/4927/files/traveling_salesman_problem_c.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/somibajegesulimubeso.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/57529794503.pdf
    • https://cdn.shopify.com/s/files/1/0433/3358/2998/files/zejujin.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fc8.bin
b117b484697b2d24185dbce52dd3f0860ff313c1f21d6eb6da8043bf57c0ca81
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC8 5060 bytes
font_01_sfnt_off000070bf.bin
60fd657a2741037100cd9a18bd979c5ce790bf3b8feae55114efe7fa398fea30
pdf-font-stream PDF embedded font (sfnt) at offset 0x70BF 10372 bytes
font_02_sfnt_off000093ca.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x93CA 4324 bytes