Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e703329f049e3c8…

MALICIOUS

PDF

41.9 KB Created: 2020-08-04 21:39:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 072e54838c1daa8c61e75dc87737549b SHA-1: 2a5d9d3cf692f72646d0b334dc252fbfa2a45ccb SHA-256: 1e703329f049e3c85df11bd903e418aa37494f91f43d5f1dcf432b518066b13b
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary redirector URL being ttraff.com, which is flagged as malicious. The document body, though heavily obfuscated, includes the URL https://ttraff.com/pify?keyword=seismic+vulnerability+of+structures+pdf, suggesting a lure to a malicious site. The presence of a link farm heuristic further indicates a malicious intent to redirect users. No scripts were extracted from this sample.

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=seismic+vulnerability+of+structures+pdf
    • http://files.alexarodriguez.org/uploads/1/3/2/3/132303270/vigoluraxajulav-kenowi-pokep-fenekabevojuwo.pdf
    • http://files.timberlinehunting.com/uploads/1/3/1/3/131380625/gilev.pdf
    • http://files.alegraloewenstein.com/uploads/1/3/0/7/130775244/6692149.pdf
    • http://files.ccmplbca.com/uploads/1/3/1/6/131606373/susajodokipe-vulotibida.pdf
    • http://files.texasbrowndog.com/uploads/1/3/2/6/132695397/vibudinuzu-pesilenujudufi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8870/7738/files/jofifosimukulo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1260/4582/files/likanekegaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/0591/0935/files/73659540579.pdf
    • https://cdn.shopify.com/s/files/1/0437/9072/9377/files/90678351603.pdf
    • https://cdn.shopify.com/s/files/1/0434/5757/7122/files/sodavolilid.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/colosseum_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0487/files/74501941372.pdf
    • https://cdn.shopify.com/s/files/1/0431/2157/4049/files/vazigijojegukopoxowovasot.pdf
    • https://cdn.shopify.com/s/files/1/0433/4629/6985/files/30203814121.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_off00006587.bin
b9a1ba7be5f08220b5a46040365a9cc2ef2c426411ffb1c5409b1217de123cb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6587 5708 bytes
font_01_sfnt_off000078e6.bin
eefb8931079a52cc143e46c29f493a3f8ee165809475b450a5af0fe39ee0325a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78E6 9940 bytes

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