Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1165964fff07beb…

MALICIOUS

PDF

40.0 KB Created: 2020-09-08 06:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed4bc73206bc819da8a2537f8f15565f SHA-1: 2d2980ccf15c8abc8f1b068ade0d1c77b75a9508 SHA-256: e1165964fff07bebc50a7fe5a0446cda955bce04e7adb5ab7e5964159a4c2140
154 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, pointing to 'ttraff.club'. The document body, though heavily obfuscated, contains text related to 'hotel room reservation form html' and the malicious URL itself. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify and static.usrfiles.com, likely for SEO manipulation or to host benign-looking lures.

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.club/wix?keyword=hotel+room+reservation+form+html
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/llp_balance_sheet_example.pdf
    • https://cdn.shopify.com/s/files/1/0433/6068/2139/files/46837269895.pdf
    • https://cdn.shopify.com/s/files/1/0436/6221/3273/files/rescind_termination_letter_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/48439932295.pdf
    • https://static.usrfiles.com/ugd/9d7ad9_5e42dbe6594d44feb44623e2bf2cd8b9.pdf
    • https://static.usrfiles.com/ugd/c3f59f_3fc60551a8c94a93bd5964dfb518cc34.pdf
    • https://static.usrfiles.com/ugd/0d089b_4c5b0d2ab59c40b485b415e645969ec9.pdf
    • https://static.usrfiles.com/ugd/53c654_8c933abe98244eacb63e281c21e09353.pdf
    • https://static.usrfiles.com/ugd/b8c837_8eafda8cdabe4d9e95f107198542fcfc.pdf
    • https://static.usrfiles.com/ugd/f3cb45_70277e3a2e49479aab7817691b20d449.pdf
    • https://static.usrfiles.com/ugd/cacfd7_7c80c9fdb74249d6bf47eea6b74bcc6f.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_off000060fa.bin
49d67bca08086d89051faa6c0807a2aeeac1d8ed162d41aec7c70c848f8cf0e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60FA 5028 bytes
font_01_sfnt_off000071e6.bin
2910cf4208661ce853388ec238afa99ef6203c2fb045b749b5deec2b4fb9cde0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E6 9912 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.