Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddf1113ffe0571e5…

MALICIOUS

PDF

40.5 KB Created: 2020-08-25 10:12:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c165288c0e3d6cc559cda3d0a19a1595 SHA-1: 245189868618efc30cc59d0bd4e9dbdbc636c2cd SHA-256: ddf1113ffe0571e5d4fe5f5ac6debbd343199c7c2ee96474d1775cb25cbf694c
150 Risk Score

Malware Insights

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

This PDF file contains a link farm and a malicious redirector URL, indicating an attempt to direct users to harmful content. The document body, though partially corrupted, includes text related to 'Gta 5 solo gunrunning guide' and the malicious URL, suggesting a lure to a scam or phishing site. The presence of numerous embedded links, many pointing to Shopify, further supports the link farm heuristic.

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.ru/pify?keyword=gta+5+solo+gunrunning+guide
    • http://files.lauraswinkfineart.com/uploads/1/3/0/7/130740624/mugaxanizivasu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/8897074425.pdf
    • https://cdn.shopify.com/s/files/1/0436/6984/8217/files/cbse_computer_syllabus_for_class_6.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/85542005800.pdf
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/77867765713.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/71345995446.pdf
    • https://cdn.shopify.com/s/files/1/0430/7927/0549/files/ripazuzipakixoxemuxiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0028/2785/files/hunting_animals_games.pdf
    • https://cdn.shopify.com/s/files/1/0430/1098/2041/files/82147962203.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/gefexokigigonajedeb.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_off00005eba.bin
b19d28841b62775d3b2a5fd8ab4efcbffee0f348de63f97e5a26249b704ea065		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBA 5148 bytes
font_01_sfnt_off00007051.bin
90750a50290fb37873e0330e3aad9e71194e1dd386f01ac7690e14adbe2ae915		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7051 10900 bytes

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