Malicious PDF — malware analysis report

Static analysis result for SHA-256 388949f2d1988f31…

MALICIOUS

PDF

45.7 KB Created: 2020-08-10 14:49:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 747ee99dec7786937c150d00b5f37083 SHA-1: 7aa9ace66a353d943d759e992e8f5966d43b47ac SHA-256: 388949f2d1988f31c041b4446019a14184b4fa9ceeb0640d6f80466338527232
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=pdf+attachment+in+mail+php'. This indicates an attempt to redirect the user to a malicious site. The document body also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or content distribution network used for hosting malicious files. The primary attack pattern is a lure to click a malicious link disguised as a PDF attachment.

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.cc/pify?keyword=pdf+attachment+in+mail+php
    • http://files.bradysbendhistoricalsociety.org/uploads/1/3/1/4/131438260/5045996.pdf
    • http://rarefo.dignityshouse.org/uploads/1/3/0/8/130874232/niril-razubaw-radikuzi.pdf
    • http://files.villagesbmwzclub.com/uploads/1/3/0/9/130969235/1be39e0ee0.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/32762077541.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8311/files/wuxixipolozufezapeteviwag.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4673/files/34447285299.pdf
    • https://cdn.shopify.com/s/files/1/0436/9825/8073/files/virago_owners_group.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/beginner_s_mind_zen_mind.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/75388038102.pdf
    • https://cdn.shopify.com/s/files/1/0432/9881/6150/files/sofivulavefuvup.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8234/2815/files/kejijokofixinolejapixagit.pdf
    • https://cdn.shopify.com/s/files/1/0435/6902/1091/files/behave_sapolsky.pdf
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/botirobazefobumo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2945/5263/files/fowunilumelurake.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_off00006738.bin
3f8b80fdb8f488b0c5accbe82b1494c4f0d2a91e895d0b376af5edf63a5a54ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6738 5124 bytes
font_01_sfnt_off00007880.bin
b39a212569c3002ee96d40f25ae590e0caa15d5055139e7c703f566cb8306bdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7880 15824 bytes

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