Malicious PDF — malware analysis report

Static analysis result for SHA-256 daa97b5a3be2696a…

MALICIOUS

PDF

63.5 KB Created: 2020-08-06 19:49:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fd6307789c9f504201d7009fb4775fb SHA-1: 6762300a5fdf306f6ccfd8ad54aa40a4dcca7fdf SHA-256: daa97b5a3be2696ac4bf90b19ca344622dd9ce4f35f114ee7b17b52cb8396a70
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=mean+deviation+formula+for+grouped+data+pdf', which is flagged as malicious. Additionally, a large number of external PDF links were found, suggesting a link farm or SEO poisoning attempt. The primary attack vector appears to be luring the user to a malicious site via the embedded redirector.

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=mean+deviation+formula+for+grouped+data+pdf
    • http://files.outdoorfitnesssligo.com/uploads/1/3/0/8/130874678/a4a84b9890e37fd.pdf
    • http://files.realfitwithbrookeb.com/uploads/1/3/2/7/132740614/8201592.pdf
    • http://files.caronhunter.com/uploads/1/3/2/6/132681823/6798397.pdf
    • http://lavevuji.pos-thinking.com/uploads/1/3/1/3/131379578/61458c11f.pdf
    • http://zixuteni.charlenegroome.com/uploads/1/3/0/7/130776433/bifubiminadiredutade.pdf
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/wagagoxako.pdf
    • https://cdn.shopify.com/s/files/1/0428/8181/0595/files/junarimubazivudomoxesasav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/98173922530.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/ipg_carmaker_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/soruzibe.pdf
    • https://cdn.shopify.com/s/files/1/0437/8014/5313/files/rejugelap.pdf
    • https://cdn.shopify.com/s/files/1/0431/9097/6673/files/64619703025.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3772/files/44950560736.pdf
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/vivir_la_cadena_de_amor.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/oxymoron_schoolboy_q_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/40016848603.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9263/files/57183819920.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_off00009c62.bin
cfe413b9f5707aa484f3f2f8f33de8ff3a3fc300b8be6aa12ae3309f6b685414
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C62 5248 bytes
font_01_sfnt_off0000ae42.bin
894b5ba9ae89e8c4f209c85effdb4cb31e2f2a002b7da930416b87aef7568675
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE42 12396 bytes
font_02_sfnt_off0000d81a.bin
dc6df80e50a97edb1208a708e896438f0de99a7a07ab29e8c7f28587c162e4af
pdf-font-stream PDF embedded font (sfnt) at offset 0xD81A 16940 bytes