Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e01ad8d661a708f…

MALICIOUS

PDF

39.5 KB Created: 2020-08-03 23:07:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bf67415f23303dc36fe017de00aa40a SHA-1: cadaaf43d6612f2d55cdc257e3d91b235e4e394e SHA-256: 1e01ad8d661a708fd24ec80d272aa4de91bc58c816678e342ac91dfb9b6617db
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=proyecto+de+tesis+unalm+pdf. The document body, though partially corrupted, suggests an academic theme ('Proyecto de tesis unalm pdf') which is likely used as a lure. The presence of many external links, including to Shopify domains, indicates a link farm strategy to obscure the ultimate destination or to spread the malicious content.

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=proyecto+de+tesis+unalm+pdf
    • http://files.wemeantoklean.com/uploads/1/3/1/4/131438137/xawaduzi.pdf
    • http://files.nttechnology.net/uploads/1/3/0/9/130969904/juguxaxujaxite-vubozunim.pdf
    • http://files.thirdcinemaproductions.com/uploads/1/3/1/3/131379749/sonazez.pdf
    • https://cdn.shopify.com/s/files/1/0438/9978/1275/files/60705733127.pdf
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/kozuriwunafavi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0506/6907/files/nuvikojifojamovewukig.pdf
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/31716744888.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/soxubojolorilafurukirazu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6208/3232/files/45265051791.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/35850078312.pdf
    • https://cdn.shopify.com/s/files/1/0433/8686/3783/files/70675032887.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/30198264185.pdf
    • https://cdn.shopify.com/s/files/1/0433/4115/2421/files/sowigapumenug.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_off00005b23.bin
1708e558a6ecf1b3dad637d065cb60136fa9fb73175b013c937b548a16b17214		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B23 5404 bytes
font_01_sfnt_off00006d77.bin
be67d92e3f65d19c1ecfded1e0b609b22111a5c5c0c04a9709b41798575cfc02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D77 10556 bytes

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