Malicious PDF — malware analysis report

Static analysis result for SHA-256 f571012487c00f94…

MALICIOUS

PDF

38.7 KB Created: 2020-07-20 09:01:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a753c01967a65d7990822a4a4b8b61cb SHA-1: 97d5d8d319a4db571d8e261b921b48e5badc1fde SHA-256: f571012487c00f946358630f8b9d454412c20e798ce5f9b97872b6143f44ff1d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be luring users to malicious external sites via deceptive links.

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.cc/wb?keyword=international%20journal%20of%20refugee%20law%20pdf
    • http://files.thequeensmagnet.com/uploads/1/3/2/7/132740682/4818801.pdf
    • http://files.isinglassriver.us/uploads/1/3/0/9/130969158/5425857.pdf
    • http://files.tcnighttoshine.com/uploads/1/3/1/6/131606280/jumovixer_taxoxel_wikepevim.pdf
    • http://files.nnhst2.org/uploads/1/3/1/3/131379612/lufuxofuwusuwufaposi.pdf
    • http://files.genesysdayz.com/uploads/1/3/1/4/131453335/zatag.pdf
    • http://files.nnhst2.org/uploads/1/3/1/3/131379612/lu
    • https://laxinuk.files.wordpress.com/2020/07/71961476272.pdf
    • https://jejiwivu.files.wordpress.com/2020/07/toxixamoririlegakomasanir.pdf
    • https://finudenunidi889677175.files.wordpress.com/2020/06/xisanesuvefaraza.pdf
    • https://niteperozis.files.wordpress.com/2020/06/petefojubitozirika.pdf
    • https://fenetodigut.files.wordpress.com/2020/07/novukefez.pdf
    • https://kururokefali.files.wordpress.com/2020/07/zalumuw.pdf
    • https://jepanabukam.files.wordpress.com/2020/07/gosan.pdf
    • https://gukubulori.files.wordpress.com/2020/07/giripobofafis.pdf
    • https://cdn.shopify.com/s/files/1/0434/2690/6264/files/51781009724.pdf
    • https://cdn.shopify.com/s/files/1/0433/3659/7654/files/kobudon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.pdf
    • https://cdn.shopify.com/s/files/1/0427/4749/4567/files/xumaxowabopofomanodozo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/37463231922.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23535065851.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4663/files/sunopevepimovinuwilirav.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_off00005a41.bin
234ab55a1c82301ed178b9c74378622f10b0c114295522fb7e7fb45ca22e6319
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A41 5020 bytes
font_01_sfnt_off00006b6c.bin
ae361b25f29dd0b01c41f2d7bbfd7245b020f821982b5aa6b0d65e309263fc14
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6C 9800 bytes