Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bc11dd48496c1d9…

MALICIOUS

PDF

41.1 KB Created: 2020-08-30 19:22:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98bd7b756e93f37635c858dd1f155c6a SHA-1: 2a722364e8d955523c781ca9f87510f4a1a457f1 SHA-256: 1bc11dd48496c1d9043745fcc89699f13f18e3c9322a69db93ba5a748431f0c9
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a 'Vw passat owners manual 2013'. This link, ttraff.com, is known to host malicious content. The document also functions as a link farm, pointing to numerous other PDFs, likely to manipulate search engine results and distribute malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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/wix?keyword=vw+passat+owners+manual+2013 In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9495/0556/files/gadom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4927/7845/files/nemufokaruge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8217/8979/files/new_life_friday_night.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b320d072e39d4329a6c1eada0ae3a01d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b48b60_4c518b3bc45c46cd9f8c47e9c4116cea.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e3ff21_d0b0a4013e1347eeb3875d0e3ec1c893.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/79e5df_581434ef1bd945af844c98758c3f4ee3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/carrion_comfort_dan_simmons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/lajuzevipiwer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6374/6466/files/30144985152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9237/5704/files/preschool_activities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2057/3080/files/padi_advanced_open_water_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6034/7551/files/1685211806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/automation_in_microbiology_laboratory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/surorut.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006206.bin
e5c6b26ccf86a0982ecff3cf5a7d4d9963b1df8d77dc7386ed2fd466dc6edbf6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6206 5512 bytes
font_01_sfnt_off000074bc.bin
0d39e190ee3c7e0389bf8d5330828ff48ec74af703ff972d21f10e88fdb3d8a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x74BC 10272 bytes