Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef592a4fca3a7282…

MALICIOUS

PDF

53.8 KB Created: 2020-08-12 14:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a0329c817ca91a3eccee117ea28ef0b SHA-1: 982abe11bbc41600448940be4acd4b6fd297bf31 SHA-256: ef592a4fca3a72820d485cf1d9491856f0ae303da119ed29a3f7dbf638685481
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=spanner+manufacturing+process+pdf'. It also exhibits a PDF link farm heuristic, with numerous external PDF links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site under the guise of a manufacturing process document.

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=spanner+manufacturing+process+pdf
    • http://files.kindredthreadstx.com/uploads/1/3/1/4/131453251/mukoziju_nofemudop_renawok_taposudixe.pdf
    • http://files.sagebrushaviation.org/uploads/1/3/0/7/130776208/jodan.pdf
    • http://files.holistichealthactivation.com/uploads/1/3/1/4/131406520/7827784.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/jorupis.pdf
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/zaladan.pdf
    • https://cdn.shopify.com/s/files/1/0436/8223/4521/files/carol_dweck.pdf
    • https://cdn.shopify.com/s/files/1/0433/9066/4860/files/riwutigeg.pdf
    • https://cdn.shopify.com/s/files/1/0437/4354/3450/files/39934067304.pdf
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/73503207503.pdf
    • https://cdn.shopify.com/s/files/1/0430/8228/5216/files/minuku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9911/2099/files/kaxabogogegovebawubo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29942388251.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/1467976521.pdf
    • https://cdn.shopify.com/s/files/1/0436/0978/4482/files/38531768347.pdf
    • https://cdn.shopify.com/s/files/1/0431/3258/4098/files/menima.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_off0000951d.bin
963ba99859ac8ae56ede920643dea85b239d86d52c9b13316997cd4acb0a088c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x951D 5544 bytes
font_01_sfnt_off0000a7d4.bin
88fa592863952e54956942e5fd1ca4c05571027489d32f489f1d56a4646fcf79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7D4 9996 bytes

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