Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee88010b490300ce…

MALICIOUS

PDF

53.1 KB Created: 2020-08-08 05:49:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 859cc43b61e876d8051cf23d2b7ecb34 SHA-1: fbaf54743e673eb4733be42b13715995d360d519 SHA-256: ee88010b490300ce94a6c647786af86db3b4b0ee530af40745bc22e600feaa38
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The primary malicious link, 'https://ttraff.ru/pify?keyword=collateral+management+process+pdf', suggests a phishing or redirection attempt. The document body, though heavily obfuscated, also contains this URL, reinforcing its malicious intent. The presence of numerous links to external PDFs, some benign and some potentially malicious, indicates a link farm or redirection strategy to obscure the ultimate destination.

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=collateral+management+process+pdf
    • http://files.teachinghooks.com/uploads/1/3/1/3/131383383/6563699.pdf
    • http://files.jd-associatesenterprises.com/uploads/1/3/1/6/131607164/sagafufirewerokotib.pdf
    • http://files.episcopalyouthcamp.org/uploads/1/3/0/7/130775221/sanuxufe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/ciaphas_cain_series.pdf
    • https://cdn.shopify.com/s/files/1/0435/7586/9603/files/bncc_educao_infantil_para_imprimir.pdf
    • https://cdn.shopify.com/s/files/1/0431/6158/3776/files/dinojidozevetebofiduros.pdf
    • https://cdn.shopify.com/s/files/1/0434/0544/3233/files/11648970150.pdf
    • https://cdn.shopify.com/s/files/1/0429/4131/7276/files/nexoronokogemulorobi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/bandhan_bank_account_closing_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/comment_fusionner_page.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/wajumewijomozala.pdf
    • https://cdn.shopify.com/s/files/1/0430/6590/1210/files/88389091824.pdf
    • https://cdn.shopify.com/s/files/1/0434/6865/2697/files/cuda_8_ubuntu_16._04.pdf
    • https://cdn.shopify.com/s/files/1/0432/7368/3112/files/tasotuwobegew.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9164/files/difference_between_delegation_and_empowerment.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/sikenoxikavakoforogejo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000071cd.bin
38edb67e7e38fa2c58d62ab5899e73740efe1aca413c7251960db0c8d4344e8d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x71CD 5284 bytes
font_01_sfnt_off00008425.bin
91c3e4d9af12d4ebc0a055845e7f8dd1111691cf4e5112705487ab5ca7ac9aa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8425 5236 bytes
font_02_sfnt_off000095db.bin
329acd67f7f36bd12ca879a20e0bcac6c982ebf0b2d78e83fa6bc5b2133bbed2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95DB 10356 bytes
font_03_sfnt_off0000b922.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB922 4324 bytes

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