Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed789e1afe39ec8c…

MALICIOUS

PDF

66.4 KB Created: 2020-08-12 10:42:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e58904459f2c0e8c26637f57940082a SHA-1: 96dab26e6ffcb5e7791ccdba0a0080751e856648 SHA-256: ed789e1afe39ec8c7cfa41a67b2ac18e91a798aaf192bf26ae26fc264968858e
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, directing users to 'https://ttraff.cc/pify?keyword=job+advertisement+examples+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many pointing to Shopify domains, but one suspicious link to 'http://jufetojo.mohamedalkhoori.com/uploads/1/3/2/7/132740214/95cc93ba6.pdf'. The document body, though heavily obfuscated, contains text related to job advertisements and the URL itself, suggesting a social engineering lure.

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=job+advertisement+examples+pdf
    • http://jufetojo.mohamedalkhoori.com/uploads/1/3/2/7/132740214/95cc93ba6.pdf
    • http://files.ryanpreeceracing.com/uploads/1/3/0/8/130814127/mijowolaf.pdf
    • http://tumivex.fccdks.org/uploads/1/3/0/8/130874620/bopuko_tirilezuvabe.pdf
    • http://files.scautoservices.co.uk/uploads/1/3/2/7/132712127/xupivaki.pdf
    • https://cdn.shopify.com/s/files/1/0436/4743/4905/files/adverbs_of_time_place_and_manner.pdf
    • https://cdn.shopify.com/s/files/1/0437/6163/1389/files/93737065868.pdf
    • https://cdn.shopify.com/s/files/1/0432/2400/6823/files/26410043082.pdf
    • https://cdn.shopify.com/s/files/1/0434/2402/2680/files/apush_give_me_liberty_chapter_13.pdf
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/vewurag.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29318048561.pdf
    • https://cdn.shopify.com/s/files/1/0434/4827/1000/files/97650203510.pdf
    • https://cdn.shopify.com/s/files/1/0431/7223/3376/files/87482152867.pdf
    • https://cdn.shopify.com/s/files/1/0437/0766/2490/files/math_problem_solving_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7954/8580/files/xibekojugoxetel.pdf
    • https://cdn.shopify.com/s/files/1/0434/0911/3242/files/saforikovij.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/6405295840.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_off0000c641.bin
0ea735a598aaef1520bd71f83c472b8f7632be5db601b8c6ecbc13725a6b3300		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC641 5444 bytes
font_01_sfnt_off0000d8b1.bin
3e99f2962c77b952bb7c58c450832dab70ac8264a1c7349a41b8ee42949c17e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B1 10476 bytes

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