Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3f57cecedd4af3c…

MALICIOUS

PDF

40.6 KB Created: 2020-08-31 06:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf3a7f7b2da8902940fa6b8ee0660121 SHA-1: 98bebbb611d5b5e86c2f2825f5977f9901f0cda0 SHA-256: e3f57cecedd4af3c3cf4fc4d6af75567414bc4c83bfaa5e5ed3ee864e329e21d
152 Risk Score

Malware Insights

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

The PDF was flagged as a malicious redirector and a link farm, containing numerous external links. One prominent URL, 'https://ttraff.com/wix?keyword=driver+handbook+haitian+creole+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain references to this URL and other PDF links, suggesting a coordinated effort to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=driver+handbook+haitian+creole+pdf
    • https://static.usrfiles.com/ugd/c068f8_eefa89a162f84a919caf53484aafd4ce.pdf
    • https://static.usrfiles.com/ugd/73f3b0_9d00cdda73a04533a319f71aecbb2732.pdf
    • https://static.usrfiles.com/ugd/45fd81_d1f865377bfe4d8d97dea25b9137819c.pdf
    • https://static.usrfiles.com/ugd/c3f88d_30d0f028adb049b98d73d357357d197c.pdf
    • https://static.usrfiles.com/ugd/078c79_2073ef8400bc423f9843964fe55edb8d.pdf
    • https://static.usrfiles.com/ugd/10e3af_9db7144ac10f417ebb3470f26ccba3f3.pdf
    • https://static.usrfiles.com/ugd/1cc777_40be18f46b034bce8c2de7497606aa84.pdf
    • https://static.usrfiles.com/ugd/b8c837_b01b54efad984754a2f8fd1c8321ce2c.pdf
    • https://cdn.shopify.com/s/files/1/0435/4375/6954/files/subafikuwuxasesozajof.pdf
    • https://cdn.shopify.com/s/files/1/0452/7046/6722/files/monarch_butterfly_facts.pdf
    • https://cdn.shopify.com/s/files/1/0434/0819/5735/files/d_d_5e_character_sheet_form_fillable.pdf
    • https://static.usrfiles.com/ugd/c8a981_6cdad3edc47c449f8920e987b684b80f.pdf
    • https://static.usrfiles.com/ugd/b8c837_85d4b6f958204b24b3f2a9278f2e0a7a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d0c90cec36e9447080397cc238479b82.pdf
    • https://static.usrfiles.com/ugd/35e1ce_b4dde6a242f44d9cb79cafa5ad0d496e.pdf
    • https://static.usrfiles.com/ugd/b8c837_de4e80c054064e80a40c774c694587f4.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_off00005fea.bin
de4b5f8c461fa931d682a5b5bd915532e35a9c6ca233ffc045aebc638295dc49
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEA 5328 bytes
font_01_sfnt_off00007204.bin
9899c7e2fc47f26de9db6d991a001bea20e6a6ada2149f0440a3b5e13e104656
pdf-font-stream PDF embedded font (sfnt) at offset 0x7204 10432 bytes