Malicious PDF — malware analysis report

Static analysis result for SHA-256 48aad83825148f15…

MALICIOUS

PDF

54.2 KB Created: 2020-08-12 10:01:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74393cc6a76e6850d8241bd45cdd5ad8 SHA-1: e54c47c74f502a2cf4338e12fcdce140848d94d2 SHA-256: 48aad83825148f15627bf71f509d9eeac7241b51645137a1022acb710938d1d5
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=anestesia+local+odontologia+pdf'. Another critical heuristic indicates a large number of external PDF links, suggesting a link farm for SEO manipulation or to obscure malicious destinations. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent. The file is likely used to redirect users to malicious content or phishing sites.

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=anestesia+local+odontologia+pdf
    • http://sigusi.jameslpoole.com/uploads/1/3/1/6/131606419/suwuvinikorufid.pdf
    • http://narakegu.thefitmenswear.com/uploads/1/3/1/4/131453323/sakazapinipo.pdf
    • http://files.districtclaycenter.com/uploads/1/3/0/7/130775992/bufugon_kagirukim.pdf
    • http://files.mindbodyspirit-yoga.com/uploads/1/3/0/7/130775220/wademuvusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/kijeraworisapuduve.pdf
    • https://cdn.shopify.com/s/files/1/0433/7795/0870/files/ladinubigexugen.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/21144251087.pdf
    • https://cdn.shopify.com/s/files/1/0429/5517/8150/files/39242780853.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/iphoto_yosemite_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/81037322785.pdf
    • https://cdn.shopify.com/s/files/1/0434/7101/2006/files/nabisco_graham_crackers.pdf
    • https://cdn.shopify.com/s/files/1/0440/8272/5029/files/motor_hp_to_amps_chart.pdf
    • https://cdn.shopify.com/s/files/1/0453/1814/4155/files/nuwowiwigugimavupika.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1644/files/12787419726.pdf
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/bafekaxapewagez.pdf
    • https://cdn.shopify.com/s/files/1/0431/3723/7146/files/83392374307.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_off00009623.bin
ce87773e670a27969a8309a100f0f9920a416ff397be561a248224f4771d1d1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9623 5216 bytes
font_01_sfnt_off0000a7f4.bin
7e65d30adaafc9950dedd1230fa54a23e4654576bc0e02af773e2ef6e8402b74		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7F4 10360 bytes

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