Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc12762a2ae965b0…

MALICIOUS

PDF

48.5 KB Created: 2020-08-24 13:17:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f1e67c6aa849c0cfd320ad4979c1714 SHA-1: accfe67ebfc497b866a54e91364ee3fe569db43b SHA-256: bc12762a2ae965b009c6889353f4163c34518ea8eb1fc24867520b75fdbeb574
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF files, many hosted on Shopify. One of these links, https://ttraff.cc/pify?keyword=logres+jrpg+guide, is identified as a malicious redirector. This suggests a link farm or SEO poisoning attack designed to lure users to malicious content. The document body is heavily obfuscated and contains the malicious URL.

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=logres+jrpg+guide
    • http://files.aztardis.com/uploads/1/3/1/4/131454352/87a48.pdf
    • http://files.beautyonlinestore.co.uk/uploads/1/3/1/8/131871963/71079.pdf
    • http://files.barry-nazar.com/uploads/1/3/2/3/132302916/tinaxumidinujubo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/2126466970.pdf
    • https://cdn.shopify.com/s/files/1/0435/7737/6936/files/40473001787.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/articulate_storyline_tutorials_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4659/files/68529755748.pdf
    • https://cdn.shopify.com/s/files/1/0430/9952/1181/files/wojakasoza.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/37169013681.pdf
    • https://cdn.shopify.com/s/files/1/0431/6849/7823/files/nivetenefajerovolezitar.pdf
    • https://cdn.shopify.com/s/files/1/0438/0118/2370/files/i_love_u_my_angel_song.pdf
    • https://cdn.shopify.com/s/files/1/0435/2845/4298/files/felumitowesujor.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1400/files/libadonumexesijitiwiwopa.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_off0000501f.bin
e927ec3b4bc223f2f4471aed5c2214d89b4e0069e66aa982f30afada3faef42a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x501F 15152 bytes
font_01_sfnt_off00008150.bin
1660dc08209a988b6bc835f0f496184bd956337760aab2bed7a6f2bda037999d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8150 4904 bytes
font_02_sfnt_off0000921f.bin
4f3386530336ca825d41826ffa1c6d715b7b40b58c9a1f2fadb5e29e7bd765fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x921F 10296 bytes

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