Malicious PDF — malware analysis report

Static analysis result for SHA-256 d71c1cd635af7d1d…

MALICIOUS

PDF

63.4 KB Created: 2020-08-14 00:54:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e994f10bd65b486647e3de8620e282c SHA-1: 5d7344a9fdee34279034f0bf75dcdd7f1e5fe271 SHA-256: d71c1cd635af7d1df08316d8875edc280635814943ab0aae9e058e01825fe5ba
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to obscure malicious redirects. One of these links, https://ttraff.com/pify?keyword=bully+game++netlog, is identified as a malicious redirector. The document body appears to be heavily obfuscated or corrupted, but the presence of the redirector URL and the link farm strongly suggests a malicious intent, likely a phishing or scam lure.

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=bully+game++netlog
    • http://files.museumofstreetculture.org/uploads/1/3/1/3/131379253/3642177.pdf
    • http://files.onslowliteracy.com/uploads/1/3/0/7/130739824/ccd183c7edf36c.pdf
    • http://files.agoldenphd.com/uploads/1/3/1/1/131164399/1b1dc9a9.pdf
    • http://files.favor-table.com/uploads/1/3/1/4/131453045/sapubajutov-jawuserizox.pdf
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/tezepor.pdf
    • https://cdn.shopify.com/s/files/1/0430/4879/6309/files/kufumubusafudamo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2578/3190/files/57211126204.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/70481321947.pdf
    • https://cdn.shopify.com/s/files/1/0432/1204/6491/files/bejojuxowikevip.pdf
    • https://cdn.shopify.com/s/files/1/0429/6530/3455/files/23022886662.pdf
    • https://cdn.shopify.com/s/files/1/0434/0137/9996/files/92066077723.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8711/files/duwipuzinosin.pdf
    • https://cdn.shopify.com/s/files/1/0433/7680/3990/files/saxikapexomagob.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5878/files/34117359491.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/rijusidojifamofaw.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_off0000affa.bin
5642d0703e3a5fecfc910536f6ffaa6146d751c9988b6a5596113d8a773b29b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFFA 4716 bytes
font_01_sfnt_off0000bffa.bin
cb48b2b98f893b23e4df67c455062feb05a91046cb4344a437f9671121434194		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFFA 10168 bytes
font_02_sfnt_off0000e284.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE284 4324 bytes

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