Malicious PDF — malware analysis report

Static analysis result for SHA-256 1daf5817caefd7cc…

MALICIOUS

PDF

71.3 KB Created: 2020-08-23 05:08:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0da1cbf6f16247e6c89c8a66ca9163c SHA-1: e81368aa17b87a24ff22f791f1c86fdad306bb91 SHA-256: 1daf5817caefd7ccb2a8942c01b6be825dbae185faaf062b62ed9756de44a589
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious due to the presence of a redirector link pointing to 'https://ttraff.com/pify?keyword=acidosis+tubular+renal+pdf+2018'. This indicates a phishing or social engineering attempt, likely to direct the user to a malicious site. The file also contains a large number of external PDF links, suggesting it's part of a link farm for SEO manipulation or to distribute further malicious content. No scripts were extracted, but the embedded URLs and heuristics strongly suggest a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=acidosis+tubular+renal+pdf+2018
    • http://wevux.blueridgebarassociation.com/uploads/1/3/2/7/132740494/26ec681ae55.pdf
    • http://files.koala-corp.com/uploads/1/3/1/1/131163514/zaxulaker.pdf
    • http://files.son-riseranch.com/uploads/1/3/2/6/132681767/gadobozamanaxal.pdf
    • https://cdn.shopify.com/s/files/1/0436/5906/7550/files/23775128714.pdf
    • https://cdn.shopify.com/s/files/1/0435/5650/3707/files/the_middleboro_casebook.pdf
    • https://cdn.shopify.com/s/files/1/0430/9306/5881/files/el_arbatel_de_magia_veterum.pdf
    • https://cdn.shopify.com/s/files/1/0433/7231/4778/files/android_bitmap_xml_attributes.pdf
    • https://cdn.shopify.com/s/files/1/0434/4122/5880/files/vinakimapasitado.pdf
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/trayectoria_del_nervio_vago.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/john_deere_260_skid_steer.pdf
    • https://cdn.shopify.com/s/files/1/0439/1639/4648/files/45814707256.pdf
    • https://cdn.shopify.com/s/files/1/0435/3844/8548/files/39891146753.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_off0000c5f7.bin
a8bf4ff96ff079c70adb2998e5d54d187c6cbe1c7a95fdc454cb363d1437d25a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F7 5680 bytes
font_01_sfnt_off0000d948.bin
1de9209adf36cebae5c985dc2b1f73eed67dd4968df5603cb8425f55c49d58b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD948 12680 bytes
font_02_sfnt_off000101e4.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101E4 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.