Malicious PDF — malware analysis report

Static analysis result for SHA-256 3968f39cdbe79038…

MALICIOUS

PDF

51.0 KB Created: 2020-08-23 08:52:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f546b7bbf77963f30ac1442a97f8d9ae SHA-1: 4525b4fa24587fa7dc7433bfc3245f4588145fc0 SHA-256: 3968f39cdbe79038ac02ecf6f0d11d4887b06f3c21ab6958e89b274dae4f0f3c
140 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to known malicious infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the string 'Candela studio viewer' and the malicious URL, suggesting a lure to a fake viewer page. The presence of numerous PDF links and a malicious redirector indicates a phishing or scam campaign aiming to lead users to harmful content.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=candela+studio+viewer
    • http://valov.introligator-zet.pl/uploads/1/3/1/4/131408791/ladegulebulijag.pdf
    • http://nuzel.rainyelephant.com/uploads/1/3/1/4/131407089/612b46c8f5e3bc0.pdf
    • http://files.sharaimage.com/uploads/1/3/0/7/130775760/xutakafexagipa-menovoniziru-sidojamopotimad.pdf
    • https://cdn.shopify.com/s/files/1/0434/1855/0430/files/73616253848.pdf
    • https://cdn.shopify.com/s/files/1/0429/5150/8131/files/53169750374.pdf
    • https://cdn.shopify.com/s/files/1/0432/7807/4022/files/blood_type_a_positive_diet_food_list.pdf
    • https://cdn.shopify.com/s/files/1/0453/1814/4155/files/39153444079.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/zofokiwekamiwideditukutid.pdf
    • https://cdn.shopify.com/s/files/1/0436/5022/0185/files/kibelovaduvudaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/4256/1445/files/wielka_gramatyka_jzyka_angielskiego_edgard.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/vexuxedomarilelezixuka.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/titigabibuzumazavuxi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/92559525253.pdf
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/38455467616.pdf
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/52490613351.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6920/files/mufuxixufiburemelefu.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_off000089a6.bin
28a27b70d742abdaf4f21ece1defb78047eb3548b964583740660586dc5658e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x89A6 4876 bytes
font_01_sfnt_off00009a5a.bin
7b0a328ca415294d3b3d7875714aac9fe219b80a4089b7faeb0288ad7a897ffb
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A5A 11016 bytes