Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c706dba0d7bc129…

MALICIOUS

PDF

51.3 KB Created: 2020-08-31 10:51:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4885d7821aa5f11a4ae54fbdb015d67 SHA-1: 503879017ff1a4c4d65a5631c05b9181ccd43670 SHA-256: 6c706dba0d7bc12954592f529e2709b51bbac5da651f951a780a5f687042136c
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.me/wix?keyword=termotanque+ariston+manual', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain this URL and other benign-looking PDF links, suggesting a link farm or SEO poisoning tactic to drive traffic to the malicious site. The ML classifier strongly indicated maliciousness.

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.me/wix?keyword=termotanque+ariston+manual In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0230/2362/files/sheet_lamination_define.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/uses_of_computer_in_various_fields.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4374/1845/files/nebemuridukozoxaxaxoxetiz.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6c032c_fa37f81b53954ef6916464564783862d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e42ee3_98e5c056e2ad464f8332c753ba37a71d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5d2cf3_ca4f5d89e30e4fa8b4cb3880122d604b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_63be9aad80654b8fbedc3e38fa9dc152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4117/7248/files/98788027845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3521/4503/files/business_development_manager_job_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/1147/3309/files/wegenifapewuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60233972239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4089/7181/files/microscopio_optico_partes_e_funoes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8793/7955/files/12060497952.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f05.bin
5ccb282dd0073ec5c2635cfd718194728d43a37e3ebbc715d4f2385c533dd0ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F05 4908 bytes
font_01_sfnt_off00008f90.bin
4f469c0fcb18de61d652d24d907cecd6e3c3154ec9925c3d70fe808ca4f816dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F90 3284 bytes
font_02_sfnt_off00009ce3.bin
c5149a096dc22ec6910935626d713554c51e9356b351cd15380847af35b3825f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE3 10292 bytes

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