Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd2948ab01e1b8ac…

MALICIOUS

PDF

44.1 KB Created: 2020-07-09 14:31:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb8e8f6a6ecbee7f1fc5365976956863 SHA-1: 6da51c9ebf6b924efe2c9850f031aa1979f825c2 SHA-256: cd2948ab01e1b8aca63b7f58bf011e9b2cf804f9f1142cffc261a6b6a3f0d68c
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm designed for SEO manipulation. One critical heuristic identified a direct link to known malicious redirector infrastructure at 'https://ttraff.cc/wb?keyword=meaning%20of%20life%20essay%20pdf'. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a lure to download further malicious content or redirect to phishing sites.

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/wb?keyword=meaning%20of%20life%20essay%20pdf
    • http://files.trueembodiment.com/uploads/1/3/1/4/131437699/kezedekamelojibok.pdf
    • http://files.bleuprinthairstudio.com/uploads/1/3/0/7/130775392/5106866.pdf
    • http://files.duanebrownlaw.com/uploads/1/3/1/4/131483253/2887604.pdf
    • http://files.companionsofchrist.org/uploads/1/3/0/9/130969375/3234800.pdf
    • http://files.schec.net/uploads/1/3/1/8/131871894/6851944.pdf
    • http://files.kahaa.org/uploads/1/3/1/0/131070045/fobasume_zukujilerufe.pdf
    • http://files.trchurchofchristcourses.com/uploads/1/3/1/3/131379740/4249720b7a7.pdf
    • http://files.pyrfectlyhandmade.com/uploads/1/3/1/3/131379680/wizowunutovozapem.pdf
    • http://files.easternsloperanch.com/uploads/1/3/2/6/132681404/3588728.pdf
    • http://files.sitesofpassage.org/uploads/1/3/1/0/131071240/455213.pdf
    • http://files.nuttyhistory.com/uploads/1/3/1/4/131453241/3864244.pdf
    • http://files.carsontidwell.com/uploads/1/3/1/4/131438249/mumiv.pdf
    • https://xiposozezu.files.wordpress.com/2020/07/kerejolixadeboj.pdf
    • https://vobadir.files.wordpress.com/2020/06/luxigitajifobivevutigap.pdf
    • https://pigarudumo.files.wordpress.com/2020/06/sutetaripemekatodejisa.pdf
    • https://pewusofoj.files.wordpress.com/2020/06/96732027067.pdf
    • https://nufovax.files.wordpress.com/2020/06/5915367945.pdf
    • https://rokunami.files.wordpress.com/2020/06/69226514509.pdf
    • https://latixafu.files.wordpress.com/2020/07/fubaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29942388251.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/monazata.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67295211500.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47184882359.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91428743782.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_off0000701e.bin
4e68bd5181fcd44f77006787dc53321b3bfbcfb4494fe9e4c7d841c0a6ef4bfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x701E 4928 bytes
font_01_sfnt_off000080fb.bin
34b687cd3700f67668bd5bcfca5b27537f755757a5656fab61954483219c7339		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80FB 10104 bytes

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