Malicious PDF — malware analysis report

Static analysis result for SHA-256 a75ffe540cbb4344…

MALICIOUS

PDF

51.0 KB Created: 2020-08-05 22:57:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7043c122ebad07fee1e6c9dae55b71c0 SHA-1: c0e835568beecc3367484a70681ed9ea85f7658b SHA-256: a75ffe540cbb4344c74ef9043995fe38429d39c86c64266d117d0eb918d021fb
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, specifically pointing to 'https://ttraff.cc/pify?keyword=arabic+to+urdu+translation+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many hosted on Shopify, to potentially obscure its malicious intent. The document body, though heavily corrupted, contains the malicious URL and appears to be a lure related to translation documents.

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=arabic+to+urdu+translation+pdf
    • http://files.householdarchaeology.org/uploads/1/3/1/4/131438840/e132fc.pdf
    • http://files.karenjanewalker.net/uploads/1/3/1/6/131636586/9262038.pdf
    • http://files.buypolarxtracts.com/uploads/1/3/2/6/132681836/3947574.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.pdf
    • https://cdn.shopify.com/s/files/1/0429/8326/0314/files/76403562275.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/fesuvaguf.pdf
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/capillary_electrophoresis_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/ssbu_tournament_legal_stages.pdf
    • https://cdn.shopify.com/s/files/1/0433/1057/9865/files/dubulixoko.pdf
    • https://cdn.shopify.com/s/files/1/0431/2501/4684/files/73641402748.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jakenetukuzalavat.pdf
    • https://cdn.shopify.com/s/files/1/0428/9275/5111/files/18511629120.pdf
    • https://cdn.shopify.com/s/files/1/0432/7184/8100/files/pitopijalofokomavedalow.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/71601963605.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/65399745192.pdf
    • https://cdn.shopify.com/s/files/1/0429/0710/7495/files/50691653228.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78683638278.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
stream_005_off000092c7.bin
5d634c6e1bf33fa5734ab97cbf0dae3c777cb71347b9b88e905c9af9558fd4fa
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x92C7 24296 bytes
font_00_sfnt_off00005e2f.bin
7f312fb2350c08f42084b353b5bb2b9fd567cb781c29a3e1f48dd19291bdc1c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2F 5276 bytes
font_01_sfnt_off00007024.bin
d0766eae91c54992da58a8513f67840ae0163c393e0c8cf983d437029cd4aa27
pdf-font-stream PDF embedded font (sfnt) at offset 0x7024 10072 bytes