Malicious PDF — malware analysis report

Static analysis result for SHA-256 c42262f39052f0ee…

MALICIOUS

PDF

44.5 KB Created: 2020-08-23 05:50:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04dc156d85e23777e2e857113c750b39 SHA-1: bc62d13c79d345b3c6486d794a09e5e9e1762bb8 SHA-256: c42262f39052f0ee8edf6ca371057308c62821712398556b5b22feb7bba3d809
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content or phishing pages.

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=psychology+big+ideas+simply+explained+pdf
    • http://dovamip.modicash.nl/uploads/1/3/1/1/131163667/e41ae911a30d.pdf
    • http://perabew.carlosvillezfineart.com/uploads/1/3/1/0/131070719/zexevodazop.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3857/files/maplestory_2019_reboot_training_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/7517/3528/files/laxodoxixunerowezemibad.pdf
    • https://cdn.shopify.com/s/files/1/0433/4095/5803/files/block_abdominal_ultrasound_step_by_step.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/obc_caste_certificate_form_assam.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6105/files/zujatoxavafi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9934/0448/files/arya_movie_full.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/35775729279.pdf
    • https://cdn.shopify.com/s/files/1/0453/9298/6280/files/sino_sino_ang_mga_bayani_ng_pilipinas.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/tokonet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6436/1113/files/risetolorigipopigo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006124.bin
6248cbd964a507428fcd881c88dc20f2284b97e8064188f95bb6f0336b70669b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6124 5492 bytes
font_01_sfnt_off000073ac.bin
6d026912dbb9d21ffc79c884f595e1e5116a3bcde5bbac772fb3f1826ec98a85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73AC 10352 bytes
font_02_sfnt_off00009700.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9700 4324 bytes

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