Malicious PDF — malware analysis report

Static analysis result for SHA-256 856fcbe3a1632279…

MALICIOUS

PDF

36.1 KB Created: 2020-08-21 22:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02688f46d2066d43fffa12bd7cb28bee SHA-1: ec90a97ddeab5a33822e5a8cc3ce42c9baea2847 SHA-256: 856fcbe3a163227916b6367cb6057d36ebd1651b64897bb24f60652e19fdb802
150 Risk Score

Malware Insights

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

The PDF document contains a lure related to a popular movie title, 'Chocolate full movie in tamil', to entice users to click on embedded links. The primary malicious link, 'https://ttraff.com/pify?keyword=chocolate+full+movie+in+tamil', is flagged as a malicious redirector. Additionally, the document exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com, suggesting an attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes. No scripts were extracted, but the PDF structure and embedded links strongly indicate a social engineering attack.

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=chocolate+full+movie+in+tamil
    • http://tufofer.allanenv.ca/uploads/1/3/1/3/131380429/5363582.pdf
    • https://cdn.shopify.com/s/files/1/0435/2730/7416/files/88176637740.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8933/files/komegabamus.pdf
    • https://cdn.shopify.com/s/files/1/0435/7799/9528/files/nipuvonozaripexip.pdf
    • https://cdn.shopify.com/s/files/1/0438/9535/7595/files/definition_de_la_sanctification.pdf
    • https://cdn.shopify.com/s/files/1/0435/6335/2227/files/small_business_administration_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0440/0958/6846/files/62452125973.pdf
    • https://cdn.shopify.com/s/files/1/0450/2867/1646/files/metabolismo_de_los_aines.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/vatekiminojotigur.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8664/files/73938281715.pdf
    • https://cdn.shopify.com/s/files/1/0434/2353/1158/files/different_types_of_casting_process.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_off00005159.bin
8a596a722d7c10cf27823a8021f419739758a1f6c16f63e11b24027a38bb95a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5159 4812 bytes
font_01_sfnt_off0000619d.bin
9530dee02ffe8f499db51df5363191de55277f53603584247920ba0513e8a2b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x619D 10060 bytes

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