Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ed6fafda8a6a370…

MALICIOUS

PDF

48.1 KB Created: 2020-08-31 16:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44ca68b5d58c0a5fbcaf09cef2e4e83f SHA-1: 1e918b4128065891e1045cd14e8a8f45f29e07d6 SHA-256: 1ed6fafda8a6a370ce575806661768ece7fca07ed8e47271430857c14d33efa6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=android+games+ideas+for+fyp'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same URL as the redirector. The primary attack vector appears to be social engineering through a deceptive link within the PDF.

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/wix?keyword=android+games+ideas+for+fyp
    • https://static.usrfiles.com/ugd/eaf48f_1bfd4ebda3d14e98b3897012d763400d.pdf
    • https://static.usrfiles.com/ugd/b8c837_2af1e18c72d34a6d8b8d538edc684766.pdf
    • https://static.usrfiles.com/ugd/63d3ad_02ff14a7b97b49c7b51de367549d2311.pdf
    • https://static.usrfiles.com/ugd/6846fe_df81d86bc328434db768d922cc698ab5.pdf
    • https://static.usrfiles.com/ugd/d775a9_60b4376b414645448d6adb83ddc79347.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc382d467c754a869cd3d621bcb08ec2.pdf
    • https://static.usrfiles.com/ugd/b8c837_3660a2cb9bf04d14a9ef227cb72b6c90.pdf
    • https://static.usrfiles.com/ugd/c7a620_d0012f90588440eb892e58fcd97b0216.pdf
    • https://cdn.shopify.com/s/files/1/0434/4715/6903/files/summoners_war_fusion_monster_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/1695/3767/files/lego_batman_movie_yify.pdf
    • https://cdn.shopify.com/s/files/1/0431/9608/8481/files/electrocardiograma_de_6_derivaciones.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/lizosimokevakobufab.pdf
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/tatenivoxizonugut.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_off00007f19.bin
de01c5d549b798f253208bfd1f206b1e08c4a274b2323cd91c03e5189f14f13c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F19 5420 bytes
font_01_sfnt_off00009184.bin
6570a7fdbdb071881457927b9ddf72069e6398448f1db4d8f028afcb797ff540		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9184 10104 bytes

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