Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fcb974c9635f4a1…

MALICIOUS

PDF

49.8 KB Created: 2020-08-02 06:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 686eae29a378f79f40dd1d1c2e88f78d SHA-1: 365110b46f66dc127f1ef9e9905c5e8e0b8fa54c SHA-256: 4fcb974c9635f4a1003546fc0b7ecd87c8e5773c9a97c3046aebff9cce7b2b91
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 it links to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=fanuc+teach+pendant+manual, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to the malicious URL and other benign-looking PDF links, suggesting a link farm or SEO poisoning tactic to distribute the malicious redirector.

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=fanuc+teach+pendant+manual
    • http://files.healthwestrealty.com/uploads/1/3/1/4/131437394/72c2e3200acb1f0.pdf
    • http://files.starins.org/uploads/1/3/1/6/131606175/ae0a718512415c3.pdf
    • http://files.jkmedina.com/uploads/1/3/1/6/131606482/tofugov_rufepofi_witede.pdf
    • http://files.droolwool.com/uploads/1/3/1/4/131453056/lolalada.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/jandy_aquapure_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/1553/6793/files/51529736622.pdf
    • https://cdn.shopify.com/s/files/1/0430/6075/6641/files/zidunaxusujoneluzenolufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0202/files/dajufatugereta.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/tisadupukore.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/71304802672.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/sefeve.pdf
    • https://cdn.shopify.com/s/files/1/0439/2553/6936/files/john_deere_technical_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/36420794872.pdf
    • https://cdn.shopify.com/s/files/1/0438/4158/5314/files/this_cowboy_s_hat_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0439/1708/2792/files/6473464738.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/85219116530.pdf
    • https://cdn.shopify.com/s/files/1/0434/3670/3900/files/wupiwawekubararotafiva.pdf
    • https://cdn.shopify.com/s/files/1/0433/5386/6408/files/35713335248.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_off000077e7.bin
53741b77c24ab5b1feef131e57d0aa98107b2a45a7972798d4999388494494be
pdf-font-stream PDF embedded font (sfnt) at offset 0x77E7 4720 bytes
font_01_sfnt_off000087c1.bin
b5d3ff28d3eb030159218db050aca343996e2e88ddeeaa956d2f6fd7cbdcc130
pdf-font-stream PDF embedded font (sfnt) at offset 0x87C1 10520 bytes
font_02_sfnt_off0000abc1.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xABC1 4324 bytes