Malicious PDF — malware analysis report

Static analysis result for SHA-256 2629c6d27ba60b81…

MALICIOUS

PDF

40.8 KB Created: 2020-08-21 20:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7950286c99e0a73578c3de51d1bfed37 SHA-1: 5669e53137f5bdecf3095c2594d9e09ece89137d SHA-256: 2629c6d27ba60b81a64f14720990ea42d9ec7154008e7a7cd6523c6d39b5fa22
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for an 'acca p5 examiner report'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. No scripts were extracted, limiting the analysis of the payload.

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=acca+p5+examiner+report+dec+2018
    • http://pejijes.cattlemansale.com/uploads/1/3/1/1/131164250/ziwofixesebokopig.pdf
    • http://files.sorellacalisthenics.com/uploads/1/3/1/4/131483138/leleviruzexuwomaz.pdf
    • http://files.theskinstudioltd.com/uploads/1/3/1/0/131069824/wuzeniseted.pdf
    • http://files.adventuresav.com/uploads/1/3/1/3/131380158/4642760.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/7231358538.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dijupabexapuvasazanuripik.pdf
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/52967494373.pdf
    • https://cdn.shopify.com/s/files/1/0431/6318/9405/files/15445509637.pdf
    • https://cdn.shopify.com/s/files/1/0438/3621/1357/files/cache_memory_mapping_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/9538/3461/files/rizenijifisupum.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/pimafelatefopapixelepejav.pdf
    • https://cdn.shopify.com/s/files/1/0433/2129/5003/files/32907226586.pdf
    • https://cdn.shopify.com/s/files/1/0431/6934/9794/files/15321914334.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/datofugilasififuko.pdf
    • https://cdn.shopify.com/s/files/1/0437/9167/9648/files/pocatello_weather_radar.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_off00006054.bin
62cb545e333c9b3b28d4a542b33a4463bd4df06daedfaf933042527956fad02b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6054 5712 bytes
font_01_sfnt_off000073b1.bin
371e158d89465257309ad20b41b76c6abf859eef52ecf577315394cd113ddd60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73B1 10280 bytes

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