Malicious PDF — malware analysis report

Static analysis result for SHA-256 b409982aa2ffcae8…

MALICIOUS

PDF

37.2 KB Created: 2020-08-08 08:06:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7832b05ad99f974129f6c023c1828a48 SHA-1: 82d98a88c48aad7329a6a7cd0a25f6c1bc1e7498 SHA-256: b409982aa2ffcae823607f6fa83ed411dfeccffc42c4d8ee72de1bce7ae91143
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=automobile+parts+catalogue+pdf', is designed to lure users by appearing as a legitimate catalogue. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, many hosted on Shopify. The primary intent appears to be redirecting users to malicious infrastructure.

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=automobile+parts+catalogue+pdf
    • http://mizozoz.myangerundercontrol.net/uploads/1/3/1/0/131070152/pudibisad.pdf
    • http://jomepelej.take5reviews.ca/uploads/1/3/0/9/130969332/luwumixomilafi.pdf
    • http://files.insidechianticlassico.com/uploads/1/3/2/6/132681507/b2f76f4d.pdf
    • http://files.perrychapel.com/uploads/1/3/1/4/131453247/5481672.pdf
    • https://cdn.shopify.com/s/files/1/0434/8405/3669/files/21137469110.pdf
    • https://cdn.shopify.com/s/files/1/0437/0884/2152/files/rilimuku.pdf
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/dexitifureposanubovef.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/veterinary_microbiology_and_microbial_disease_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/bowijefi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3312/3221/files/45553382288.pdf
    • https://cdn.shopify.com/s/files/1/0430/9090/3193/files/41172603401.pdf
    • https://cdn.shopify.com/s/files/1/0428/7945/1289/files/mejomebixafeluf.pdf
    • https://cdn.shopify.com/s/files/1/0436/6427/7657/files/caucasian_chalk_circle_questions.pdf
    • https://cdn.shopify.com/s/files/1/0437/3381/1351/files/books_every_high_school_student_should_read_before_college.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_off00004b53.bin
4762e404b638732e929dcc7115e4e881b9f1d9f8cc7d259757e9f9031cf07ab9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B53 5604 bytes
font_01_sfnt_off00005e43.bin
64f35f3c5db1b4df7f7d434ddf0f850aea4810e3d2389f2ceef1428bff86b867		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E43 13368 bytes

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