Malicious PDF — malware analysis report

Static analysis result for SHA-256 905ec387aa40f10c…

MALICIOUS

PDF

53.3 KB Created: 2020-08-15 07:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeab29ec82fcea5e59179dabec012093 SHA-1: ea5d6d32ae372a11eab81da36ca6b8fa4af76382 SHA-256: 905ec387aa40f10cbc68d07a1c148ae1e4733f11ff230beb90c53a474c3860ff
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.com'. Additionally, it features a link farm with numerous external PDF links, many hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute content. The ML classifier also flagged this PDF with high confidence. The embedded URLs and the structure indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=chaupai+sahib+lyrics+pdf
    • http://xadudi.setthestagecostumesprops.com/uploads/1/3/0/7/130739777/2747267.pdf
    • http://degepumi.uniteoffshore.net/uploads/1/3/2/8/132816091/jikekuv.pdf
    • http://files.villinlannen.com/uploads/1/3/2/6/132683173/dobezib.pdf
    • http://files.citycentrefitness.com/uploads/1/3/0/9/130968943/torejenorivelo-fisevute-lililaz-gekipunibinisu.pdf
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/kufizirivovowuxiliw.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/74374774848.pdf
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/two_step_algebra_equations_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/47462795521.pdf
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/endorsement_of_cheque.pdf
    • https://cdn.shopify.com/s/files/1/0438/6252/4069/files/biology_book_12th_class.pdf
    • https://cdn.shopify.com/s/files/1/0433/2024/6427/files/fosoleparumifavaxumamo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/nukenuliw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2127/9138/files/sisinesu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bijuwosozawubuvenokuzi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bcc.bin
7ce91406a98537421ded2137a739b94e0f4ceb6bc9af1a65d725a7ecc17fba8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCC 5392 bytes
font_01_sfnt_off00007e12.bin
814992be763021c11dca23fed22b8bb7a0f9688c8b5af2f3d58b36f318d7b63c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E12 3740 bytes
font_02_sfnt_off0000898b.bin
dc2b740e27002eb4b29cbb7aa06ba5519f490267af68290cee566d0471d857f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x898B 7756 bytes
font_03_sfnt_off0000a441.bin
79a372198d26e356fad83fd621404f1b5615e5e3d7dd378624bf527fbe329317
pdf-font-stream PDF embedded font (sfnt) at offset 0xA441 9920 bytes