Malicious PDF — malware analysis report

Static analysis result for SHA-256 7468cafb322a75b0…

MALICIOUS

PDF

118.9 KB Created: 2020-08-25 05:14:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c14660de10d10e5f0ecd2c2de8ba3972 SHA-1: 3ba3d3463cd4099cac9d35b81132fcb68d367492 SHA-256: 7468cafb322a75b0afa33af5b6ebf3b3aadda4d6fed2533daa4db05bbf37bfe9
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector and a link farm. The primary malicious URL, 'https://ttraff.com/pify?keyword=cancionero+guitarra+acordes+pdf', is likely used to redirect users to malicious content. The ML classifier also strongly indicated maliciousness, supporting the assessment of a phishing or content distribution attack.

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/pify?keyword=cancionero+guitarra+acordes+pdf
    • http://files.michigan-alpacas.com/uploads/1/3/0/9/130969390/womimofesojerarenu.pdf
    • http://files.coxevolab.org/uploads/1/3/1/3/131380733/b435077a189.pdf
    • http://files.teklamcinerney.com/uploads/1/3/1/8/131856173/jadeni_bofisuwuvom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5744/6050/files/libro_centrales_electricas.pdf
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/kozebop.pdf
    • https://cdn.shopify.com/s/files/1/0435/5663/4787/files/articles_grammar_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/make_excel_spreadsheet_full_page.pdf
    • https://cdn.shopify.com/s/files/1/0438/0357/4432/files/swiftui_by_tutorials_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/2815/9381/files/kemipugezawulumaw.pdf
    • https://cdn.shopify.com/s/files/1/0461/0903/2612/files/1885656117.pdf
    • https://cdn.shopify.com/s/files/1/0434/5305/5128/files/tumaczenie_zda_angielski.pdf
    • https://cdn.shopify.com/s/files/1/0437/6687/4269/files/7049090913.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/13695694925.pdf
    • https://cdn.shopify.com/s/files/1/0437/0454/9531/files/blippo_black_outline_p_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017d2f.bin
06f0d89e0fc6cd765cda5777bd9c3ed1f3648559144670c575f9874d5bccdfc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17D2F 5196 bytes
font_01_sfnt_off00018ede.bin
ac14972b7b2947834c866a693307dd83921f9e40fad0e2ab592cecd13463aa54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18EDE 1888 bytes
font_02_sfnt_off000197f1.bin
bdec2aebad6f653342f73ca0cac0ab53815bc3fb53f9de836bcecbc654c8b980		 pdf-font-stream PDF embedded font (sfnt) at offset 0x197F1 18272 bytes

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