Malicious PDF — malware analysis report

Static analysis result for SHA-256 3071806c2cc93960…

MALICIOUS

PDF

45.5 KB Created: 2020-08-03 21:39:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8da280cad43094278ae27a06ac26f860 SHA-1: 5b9c83f1aba158b952b2d07a741ed251172e9fbc SHA-256: 3071806c2cc9396076147d52202c47b9c51160dc89b7d9e15e8df1f7c6645898
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'candida diet program' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of multiple external PDF links indicates a link farm strategy, likely to improve search engine ranking for malicious content.

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.ru/pify?keyword=ultimate+candida+diet+program+pdf
    • http://files.hansenasphalt.com/uploads/1/3/1/4/131453574/668343.pdf
    • http://files.capecodmedium.com/uploads/1/3/1/3/131397940/nosurelixagiwulezagi.pdf
    • http://files.exitstrategyband.com/uploads/1/3/1/3/131384081/wudif-gisobane-sekumawu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/80124552843.pdf
    • https://cdn.shopify.com/s/files/1/0437/5733/8776/files/mcpe_id_list.pdf
    • https://cdn.shopify.com/s/files/1/0438/8211/9323/files/84302795714.pdf
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/46745675605.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1044/files/fekudebobikisoruxuxusud.pdf
    • https://cdn.shopify.com/s/files/1/0428/8924/8927/files/zaxemubojeregusulep.pdf
    • https://cdn.shopify.com/s/files/1/0430/6753/9623/files/58214903046.pdf
    • https://cdn.shopify.com/s/files/1/0437/1221/7241/files/85479766558.pdf
    • https://cdn.shopify.com/s/files/1/0437/7244/4823/files/tavilekivadevan.pdf
    • https://cdn.shopify.com/s/files/1/0432/3681/9104/files/morgana_build_mid.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_off00007361.bin
bad43835a0954473e08c921b6377986c8188d01b33d25bdaad6865230052f662		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7361 5288 bytes
font_01_sfnt_off00008548.bin
ec4621f35957b4063c917b6a3715c425f299428d76e8bc6fb31862c8a1a157bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8548 10536 bytes

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