Malicious PDF — malware analysis report

Static analysis result for SHA-256 df1a2630ad2b74a7…

MALICIOUS

PDF

47.9 KB Created: 2020-08-22 11:41:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 464498657834656df13d5702221c5fa5 SHA-1: f0a141de5acd8b920a7e6577baeb2ab6a2d1a54a SHA-256: df1a2630ad2b74a72704dc3669734f3bb9dede41f201f5972e805c5143f290ec
120 Risk Score

Malware Insights

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

This PDF file was identified as malicious due to its inclusion of a link farm, a common technique for SEO poisoning and redirecting users to malicious sites. The primary malicious URL, https://ttraff.ru/pify?keyword=rubber+sheet+for+baby+bath, is a known redirector. The document body, though heavily obfuscated, contains this URL and other links, suggesting an attempt to lure the user to malicious infrastructure. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or redirection attack.

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=rubber+sheet+for+baby+bath
    • http://files.journeyofmyheart.org/uploads/1/3/1/4/131453605/9285006.pdf
    • http://files.hollyspetandequinecare.com/uploads/1/3/2/6/132696351/gewutubujabelu.pdf
    • http://files.ccadt.org/uploads/1/3/1/4/131438056/1511072.pdf
    • http://files.asiaticofusion.net/uploads/1/3/1/4/131406592/5362764.pdf
    • http://files.capturingmilliseconds.com/uploads/1/3/0/8/130814674/doxazawam_gujufi_sezedamif.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/72983105277.pdf
    • https://cdn.shopify.com/s/files/1/0435/5624/1557/files/pufixopid.pdf
    • https://cdn.shopify.com/s/files/1/0435/6161/5519/files/degesamuk.pdf
    • https://cdn.shopify.com/s/files/1/0445/8404/2655/files/3554286281.pdf
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/tenancy_agreement_sample_uk.pdf
    • https://cdn.shopify.com/s/files/1/0432/8790/4422/files/lagebidigona.pdf
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/97296905174.pdf
    • https://cdn.shopify.com/s/files/1/0435/2812/6618/files/26805605207.pdf
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/beautiful_disaster_series_free_download.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
font_00_sfnt_off00007121.bin
59c7cdffec56eb068bfdbdb9afc22c7d4ebd6ae9e24126133471342e057b7a2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7121 4800 bytes
font_01_sfnt_off00008191.bin
72e9a999e54592e976cf52520d9f96bacc44fdd24b06958f8288c4efbab6b3f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8191 10344 bytes
font_02_sfnt_off0000a4e4.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E4 4324 bytes

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