Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e8b4784c73b3cd7…

MALICIOUS

PDF

45.0 KB Created: 2020-08-17 07:41:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97b2d21f91f2590b99eb22d9865eac31 SHA-1: c2d8fb602b2e8b77539cc2076665bb11e01b82f5 SHA-256: 3e8b4784c73b3cd7c653dcceca836adb2ab4387f80ce906a035f7853a7cc0608
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is presented as a free customizable drink ticket template. The document body and embedded URLs confirm the lure. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, but the primary intent appears to be redirecting users to malicious infrastructure.

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/pify?keyword=free+customizable+drink+ticket+template
    • http://files.alpujarra-granada.com/uploads/1/3/1/0/131070394/xunujanon.pdf
    • http://files.981themarcoislandfm.com/uploads/1/3/1/6/131606186/gamew.pdf
    • http://tojederi.elinatinsky.com/uploads/1/3/1/6/131606174/12d7d.pdf
    • http://files.proyecto1867.com/uploads/1/3/2/3/132302913/mozolejemi-vexiramiga-leselu.pdf
    • http://wuxigo.natascha-wagner.com/uploads/1/3/0/7/130739561/kodidejuziwuf-biwolov-webitir-fixalad.pdf
    • https://cdn.shopify.com/s/files/1/0437/8994/2945/files/87292486263.pdf
    • https://cdn.shopify.com/s/files/1/0433/8758/4661/files/newididakor.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5089/files/wewagebelulifaroroxip.pdf
    • https://cdn.shopify.com/s/files/1/0437/4895/0170/files/98389474581.pdf
    • https://cdn.shopify.com/s/files/1/0428/3842/5767/files/wesatig.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/spring_applicationcontext_xml.pdf
    • https://cdn.shopify.com/s/files/1/0431/3923/5997/files/woronutisoruluwumiz.pdf
    • https://cdn.shopify.com/s/files/1/0435/2062/2756/files/livro_apicultura_manejo_e_produtos.pdf
    • https://cdn.shopify.com/s/files/1/0434/7500/9686/files/answer_machine_argos.pdf
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/nafikuzefukej.pdf
    • https://cdn.shopify.com/s/files/1/0432/4658/3970/files/lorugejekifegoxozofudo.pdf
    • https://cdn.shopify.com/s/files/1/0440/8596/9046/files/21678903325.pdf
    • https://cdn.shopify.com/s/files/1/0438/4063/5042/files/24379815456.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_off000071da.bin
cb16510b4692ced679461e720f9505f48df326360278f4afa37adc4bc07b2037
pdf-font-stream PDF embedded font (sfnt) at offset 0x71DA 5428 bytes
font_01_sfnt_off00008439.bin
24cd61cdd6ade81cb7e6e300faa3a166e8b9985e15327168bcf45687783a1688
pdf-font-stream PDF embedded font (sfnt) at offset 0x8439 10060 bytes