Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1fe942def75422…

MALICIOUS

PDF

36.2 KB Created: 2020-08-31 07:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd6aec603a122c23600daa437db513cd SHA-1: 060d55a0f63bb4eabbafcb4896c008166bce8623 SHA-256: ff1fe942def7542211fb6475545364b7899b240e6b7b060da7e1c7aa612ba231
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm and a malicious redirector. The primary malicious URL identified is https://ttraff.com/wix?keyword=cured+gut+long+dark. The presence of numerous links, many pointing to a redirector, strongly suggests a phishing or scam campaign aimed at directing users to malicious content. The ML classifier also flagged this PDF with high confidence.

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/wix?keyword=cured+gut+long+dark
    • https://cdn.shopify.com/s/files/1/0434/8438/1350/files/hal_higdon_half_marathon_training_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/xizazaruzeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/83241156702.pdf
    • https://static.usrfiles.com/ugd/3bf302_cf5443de80304d9fa5772ae03a2024c5.pdf
    • https://static.usrfiles.com/ugd/b85eb0_91b641283ef840b7ad3f8a106710bc5c.pdf
    • https://static.usrfiles.com/ugd/b8c837_db728c2d8e534cf69190d2e03b2c1a4e.pdf
    • https://static.usrfiles.com/ugd/e5cbe5_40f7aecc4e074c2eb92dbfb6d7a999cb.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_d85b2715504a40fc97e399cae39dca76.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab7a096ce89f4b098577212538215d70.pdf
    • https://static.usrfiles.com/ugd/9219f8_ef158a1b21f44531955f52b6dac1c6ab.pdf
    • https://static.usrfiles.com/ugd/575363_774384f016b64162b1d6435c49e8dabd.pdf
    • https://cdn.shopify.com/s/files/1/0430/6790/0061/files/sample_interoffice_memo_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/0154/3831/files/blank_avery_5160_template_for_word.pdf
    • https://cdn.shopify.com/s/files/1/0431/0905/6666/files/tatagadukopikefonum.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0605/files/wii_wad_download.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_off00005211.bin
f1ad945e19c56a8ca381f447afba1e242901e64865188cbb9807b8a1010e892a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5211 4784 bytes
font_01_sfnt_off00006266.bin
ef61e4bc599fdb2b9a4280645b65757a940229d56f6b9b7348471059690fcaa6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6266 10072 bytes

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