Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4987d67d42cfb49…

MALICIOUS

PDF

119.1 KB Created: 2020-08-10 05:39:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5221ceec423765d5feac74aec901c4eb SHA-1: 5cb99173c154c2e834badb30b3826caff4f5f00c SHA-256: f4987d67d42cfb49d00f2c719f725a4ef12bce7116fcdce6a758fe9c2ee1401a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=awk+programming+language+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure. No scripts were extracted, and the file type is PDF, suggesting a social engineering attack leveraging a deceptive document.

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=awk+programming+language+pdf
    • http://files.arganissimany.com/uploads/1/3/2/8/132814272/jerorubiz.pdf
    • http://files.debsdetours.com/uploads/1/3/2/3/132303138/bixetunarijuro.pdf
    • http://files.voanandivy.com/uploads/1/3/1/4/131453146/5676758.pdf
    • https://cdn.shopify.com/s/files/1/0433/1778/8830/files/10943443373.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/wufasi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1863/9765/files/modern_bioelectricity.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97897646990.pdf
    • https://cdn.shopify.com/s/files/1/0437/5294/7863/files/55979030911.pdf
    • https://cdn.shopify.com/s/files/1/0433/1392/2206/files/55515611613.pdf
    • https://cdn.shopify.com/s/files/1/0437/2620/9175/files/mercury_240_efi_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/nudamavifatipi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9927/5935/files/67027872108.pdf
    • https://cdn.shopify.com/s/files/1/0437/3512/2081/files/4347061260.pdf
    • https://cdn.shopify.com/s/files/1/0437/6123/8168/files/pujelodibifafamowaweje.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_off00018a0c.bin
8f6aef22f9a80f9d10db7015229213a9359135c4d0064956c244e37565599f7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18A0C 5328 bytes
font_01_sfnt_off00019c32.bin
5f7472d18f958479caada728899171285a5b28d7ee4f2ebc5081d8bccb273da6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19C32 16196 bytes

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