Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f5af3d2c3e16331…

MALICIOUS

PDF

69.9 KB Created: 2020-09-03 00:32:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65e8d938e067f04a95085420a8526a96 SHA-1: 5c9064ca5b679473adca60756d89fa457cc8332c SHA-256: 6f5af3d2c3e163310773147885fe0ac1d5f3a84484ea2a62a0472cb80c7759d4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, many of which point to a link farm designed to manipulate search engine results. One prominent link, 'https://ttraff.com/wix?keyword=storeonce+3540+cli+guide', is identified as a malicious redirector. The document's structure and the presence of numerous external links suggest an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

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=storeonce+3540+cli+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/314c35_30a681bddc4846adaa08d0967e6933ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f0ef534d9c14e938ebf0f527d2bec38.pdf
    • https://static.usrfiles.com/ugd/b91566_15c97575d9f84688b799cbff1a1e635b.pdf
    • https://static.usrfiles.com/ugd/963627_8b927b9a920f43b6bcb326bf4630de4d.pdf
    • https://static.usrfiles.com/ugd/607883_908ead8ed7724b23a9c22624d1019ca8.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/girotimovu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/32694291945.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/14071584027.pdf
    • https://cdn.shopify.com/s/files/1/0435/2484/9815/files/bases_nitrogenadas_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/die_analphabetin.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/tactics_for_listening_third_edition_expanding.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/xodegabi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5335/9005/files/ruzibitalununodixigi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6984/0283/files/93564599004.pdf
    • https://static.usrfiles.com/ugd/c3548c_7548d6f4cf1d4377a7b878e939350e34.pdf
    • https://static.usrfiles.com/ugd/b8c837_5e363015ff504085a3de576f5df0ec33.pdf
    • https://static.usrfiles.com/ugd/f34823_fa2aaa0ea5804e76b4f66a412e1c1463.pdf
    • https://static.usrfiles.com/ugd/f1d680_4281769447dd40d49253df18f5eb79a0.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca8f.bin
db22b4ecece8b40585b989fbf71e7f4d147a332c1d14dff53d450f0bf4e1fd37		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA8F 5340 bytes
font_01_sfnt_off0000dcd5.bin
5da2a338045b1a7ffaabd2c150a09ec6f0283801f84a54180f5814d5212cc28d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD5 14444 bytes

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