Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3df9eacc6829dc2…

MALICIOUS

PDF

40.6 KB Created: 2020-08-19 02:21:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c11cd0c17b0cf573d2ae8d35ece4c608 SHA-1: 0dd8de5e6b2bff02847f6c3c736032f1cfd34c6f SHA-256: e3df9eacc6829dc26169fcbb3e3f57485852ac6de751e57d39be41ad91f893e0
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector at 'ttraff.cc'. The document body is heavily obfuscated but appears to contain the text 'Qatar airways duty free magazine pdf' and the malicious URL, suggesting a lure to trick users into downloading further malicious content. The presence of numerous benign-looking Shopify links alongside the malicious one is a common tactic to mask malicious activity.

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=qatar+airways+duty+free+magazine+pdf
    • http://files.lisagerstenkorn.com/uploads/1/3/1/3/131379530/8d540.pdf
    • http://files.tlcor.org/uploads/1/3/1/0/131071289/meraze.pdf
    • http://files.stephaniebershyoga.com/uploads/1/3/1/3/131379371/1049198.pdf
    • https://cdn.shopify.com/s/files/1/0440/0024/7958/files/23092328878.pdf
    • https://cdn.shopify.com/s/files/1/0431/6243/5739/files/renewable_energy_advantages_and_disadvantages.pdf
    • https://cdn.shopify.com/s/files/1/0435/8363/5619/files/xiwijewutoxafezesu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9095/9766/files/frequently_asked_questions_word_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/6772/7269/files/futsal_score_sheet_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/3216/7068/files/22915667845.pdf
    • https://cdn.shopify.com/s/files/1/0435/5345/6289/files/pygame_opencv_camera.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/woxagarivudibijenubonafem.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4087/files/8154562352.pdf
    • https://cdn.shopify.com/s/files/1/0439/1878/6728/files/78096551725.pdf
    • https://cdn.shopify.com/s/files/1/0431/2154/1277/files/73788028233.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_off00005fc2.bin
d779f6077f634a4f42ba5a1052860bbdd2c5219d90612551bbbbe6624fd85f71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC2 5632 bytes
font_01_sfnt_off000072ff.bin
bc091e82431c1526ab3e7a0be67ad5d9ba97f907db5721c93e3788f398ecd029		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72FF 10256 bytes

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