Malicious PDF — malware analysis report

Static analysis result for SHA-256 96915ec82f9f36d3…

MALICIOUS

PDF

45.6 KB Created: 2020-08-08 18:42:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adc1fec41b4498b9a58732b9ebb42cb9 SHA-1: 3292306201edf97bffc062b4509457bb0d9da5b9 SHA-256: 96915ec82f9f36d3f05754e1dea1010362559fb62b4bef8367b773fa8ac74897
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large external link farm. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=3d+map+of+world+pdf', which likely serves as a redirector to further malicious content. The document body, though heavily obfuscated, also contains this URL and other Shopify-hosted PDF links, suggesting a coordinated effort to distribute malicious content through a link farm. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.cc/pify?keyword=3d+map+of+world+pdf
    • http://files.byboukje.nl/uploads/1/3/0/7/130738991/6882156.pdf
    • http://files.patchaouri.com/uploads/1/3/0/7/130739119/9238909.pdf
    • http://files.quicktansunless.com/uploads/1/3/2/6/132680962/jawapir.pdf
    • http://retilep.nordoniadrama.com/uploads/1/3/0/9/130969060/zijerinax.pdf
    • https://cdn.shopify.com/s/files/1/0436/1938/5504/files/46465231585.pdf
    • https://cdn.shopify.com/s/files/1/0437/1342/9655/files/types_of_central_air_conditioning_system.pdf
    • https://cdn.shopify.com/s/files/1/0435/6335/2227/files/82395698256.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/tazoxijeledax.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4831/files/komage.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/depopopi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0372/4455/files/12852280984.pdf
    • https://cdn.shopify.com/s/files/1/0437/5832/1821/files/36113534037.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53293114795.pdf
    • https://cdn.shopify.com/s/files/1/0432/6070/6971/files/business_trip_report_sample.pdf
    • https://cdn.shopify.com/s/files/1/0435/6361/4369/files/70729878689.pdf
    • https://cdn.shopify.com/s/files/1/0428/8089/3084/files/52003044111.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/fepejuniwifus.pdf
    • https://cdn.shopify.com/s/files/1/0429/0999/1075/files/xixiwoparenoxoganazifitat.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_off00007415.bin
bfa905ae24e5855a94cbaf1effe73c878c14f155305d3e0d097b9ef71f2bc2a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7415 5172 bytes
font_01_sfnt_off000085aa.bin
80e3e019336f0eed324676b3ac706013ff77ffe0cd537c458850b3ce4c353536
pdf-font-stream PDF embedded font (sfnt) at offset 0x85AA 10444 bytes