Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3ff3a73c6f69e9…

MALICIOUS

PDF

49.9 KB Created: 2020-08-06 16:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8014bb074e68adf19125ff42ad5f55d6 SHA-1: 2500aa498a68a7ea72bdd2d1a8f8803d61f203e6 SHA-256: cc3ff3a73c6f69e9a50f87c251d7544e972199ce33a34aaf911fc944329fbe51
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to PDF files hosted on various domains, likely for SEO poisoning. One of the primary links redirects to a known malicious infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to transformer oil testing, suggesting a lure to disguise the malicious intent. No scripts were extracted from this sample.

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=breakdown+voltage+test+of+transformer+oil+pdf
    • http://files.shop-at-revived.com/uploads/1/3/0/7/130775760/9420624.pdf
    • http://files.fernandoandradeart.com/uploads/1/3/0/7/130776046/21dcea9f.pdf
    • http://files.huttvalleysingers.org.nz/uploads/1/3/2/7/132740665/mudipiboxozuweb.pdf
    • http://files.milfordgardenersclub.co.uk/uploads/1/3/1/0/131071067/zajen.pdf
    • http://files.rachelsvineyardtucson.org/uploads/1/3/1/3/131383664/0714680.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12410546401.pdf
    • https://cdn.shopify.com/s/files/1/0432/3583/6059/files/jolejo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3549/1490/files/tofonibetevotigixokerizi.pdf
    • https://cdn.shopify.com/s/files/1/0447/4486/7994/files/lean_mean_fat_reducing_grilling_machine.pdf
    • https://cdn.shopify.com/s/files/1/0432/0608/2717/files/34858741943.pdf
    • https://cdn.shopify.com/s/files/1/0431/1079/3370/files/61278585186.pdf
    • https://cdn.shopify.com/s/files/1/0432/9907/8304/files/kaxoxomemeravepupozo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/ninuboporogorafagunezusot.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1496/files/pikinagugipimariroke.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/59540032291.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xoperesotojazi.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_off00008429.bin
dcd54415fcc63a6b21a2d26331ab6775f6459532d5c0263db4295ad57fe3b9ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8429 5628 bytes
font_01_sfnt_off0000975c.bin
d05de88a76b4832a6b91c6897a1e94ac754756294a6e3aae749e1a572d73ff00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x975C 10116 bytes

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