Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6e8ef5c6312ead9…

MALICIOUS

PDF

44.2 KB Created: 2020-08-15 05:01:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47c04c657c13942afe0fed879c706f34 SHA-1: 6d9448f0c4e4711c766a413cf6a4f24e73c6715a SHA-256: d6e8ef5c6312ead9093d95de8c84d7a6f55783c2414eb212ad05c308f897807e
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, disguised with academic-sounding keywords. This heuristic indicates a social engineering attempt to lure the user to a malicious site. The document body, though heavily obfuscated, also contains the same URL, reinforcing the malicious intent. The file is generated by wkhtmltopdf, a tool often used to create PDFs from web content, suggesting it may have been dynamically generated to host the malicious link.

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=formation+of+bilaminar+and+trilaminar+germ+disc
    • http://files.courtneybeardall.com/uploads/1/3/0/7/130739628/dusojitivasut-xigelumabujo.pdf
    • http://files.nvusdwellness.org/uploads/1/3/0/7/130740477/kipijenorotama.pdf
    • http://files.jaychapman.org/uploads/1/3/0/7/130775868/lajigonutopap-zinan-favixogumisi-mononajut.pdf
    • http://files.petrascreationsnc.com/uploads/1/3/2/7/132712661/a6951df.pdf
    • https://cdn.shopify.com/s/files/1/0430/8379/2545/files/2004_mitsubishi_endeavor_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/2768/4760/files/22992713420.pdf
    • https://cdn.shopify.com/s/files/1/0431/8108/0725/files/bismarck_nd_zip_code.pdf
    • https://cdn.shopify.com/s/files/1/0434/7330/5762/files/11112821552.pdf
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/nigasojises.pdf
    • https://cdn.shopify.com/s/files/1/0437/9597/2256/files/36869537868.pdf
    • https://cdn.shopify.com/s/files/1/0437/8548/6485/files/hashimoto_thyroiditis_and_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0433/3735/1326/files/45722537898.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/act_not_working_ffxiv_5._2.pdf
    • https://cdn.shopify.com/s/files/1/0445/8368/2212/files/lefudutakugedutuwo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38140624907.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/77899647189.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/hitman_blood_money_compressed.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_off00006ea1.bin
a7498e2d2a3a3ebee27e6c1c15056ce54c3b7b72aeb80be967d7cf5715c99247
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA1 5436 bytes
font_01_sfnt_off000080fd.bin
e95f1846da3bd86f68358b7b3ddfd2846ef6c153cbf8704308bffc4b51188015
pdf-font-stream PDF embedded font (sfnt) at offset 0x80FD 10036 bytes