Malicious PDF — malware analysis report

Static analysis result for SHA-256 aecfda18674289fd…

MALICIOUS

PDF

38.1 KB Created: 2020-08-22 23:13:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b316d5280229eb07311b871f3389645f SHA-1: 51bbe3dfeb3184cffea000a0fecc22ea69795f43 SHA-256: aecfda18674289fd06e3fcbdf9f7f7f4e899a7c21efe6cec7610326a762fc6ac
150 Risk Score

Malware Insights

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

The PDF contains a mass link farm, with a primary malicious redirector URL. The document body text, though corrupted, appears to be a lure related to 'birthday cake with name priyanka', which is also present in the malicious redirector URL. This suggests the PDF is designed to trick users into clicking the malicious link, likely leading to further compromise.

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/pify?keyword=birthday+cake+with+name+priyanka
    • http://files.sylviaparkinsonbrown.com/uploads/1/3/0/7/130776206/2475618.pdf
    • http://files.witinallshop.com/uploads/1/3/0/9/130969497/mefejiwiv_danobamorotejo_tofadoba.pdf
    • http://files.shawtyreservices.com/uploads/1/3/2/6/132681634/jonafotejotadise.pdf
    • http://gorumuvid.rmheducation.com.au/uploads/1/3/1/3/131398440/jogazevisikenifet.pdf
    • http://files.samrahhairandbeauty.com/uploads/1/3/1/4/131437636/4322940.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/41346771502.pdf
    • https://cdn.shopify.com/s/files/1/0434/8408/6424/files/artificer_battle_smith.pdf
    • https://cdn.shopify.com/s/files/1/0435/8550/3393/files/shield_hero_light_novel_14.pdf
    • https://cdn.shopify.com/s/files/1/0430/0383/8615/files/southwest_print_boarding_pass.pdf
    • https://cdn.shopify.com/s/files/1/0460/1069/5839/files/c_form_online_gujarat.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/moxegumigetalanuzavujot.pdf
    • https://cdn.shopify.com/s/files/1/0438/7838/3771/files/wuvelodegitapuvome.pdf
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/xupatalotikuliwuxowatojat.pdf
    • https://cdn.shopify.com/s/files/1/0433/3414/0072/files/38631959829.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_off000057cb.bin
7cb09b3c59de10ab0d5be7d38c5114cd06d9fd78412ae1a8725136b5945a43a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57CB 5412 bytes
font_01_sfnt_off00006a18.bin
9d0c095f7802e09b4b068a2e34a5cb95bc4461b9e1408bee73a1c3e6518e2d93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A18 9816 bytes

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