Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9147930de68ffb7…

MALICIOUS

PDF

68.4 KB Created: 2020-08-12 09:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af95f28e9e08ab43b87581fdeca5929b SHA-1: e289cd034746ddf5bf6ea6cd6f42dc78f2b1babb SHA-256: c9147930de68ffb744f64484328be100ff0c91d01a3213101152353295ba05eb
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=jet+engine+parts+and+function+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0433/5498/0507/files/fugojaxazewikutodux.pdf'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the redirector URL, reinforcing its role as a lure.

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/pify?keyword=jet+engine+parts+and+function+pdf
    • http://files.rusticedenphotos.com/uploads/1/3/1/8/131857421/7165276.pdf
    • http://toleviba.takadventures.com/uploads/1/3/2/7/132710589/jorupagiromemofegoxo.pdf
    • http://zidef.coloresalonstudio.com/uploads/1/3/2/3/132302780/xerax-mosudo-xedarozawemiz.pdf
    • http://files.mipostcards.com/uploads/1/3/2/6/132681985/bf2bd2.pdf
    • http://files.mushroomsnaturallystl.com/uploads/1/3/0/8/130814052/virijakose.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0507/files/fugojaxazewikutodux.pdf
    • https://cdn.shopify.com/s/files/1/0440/6951/9510/files/milavowaporogiketutirax.pdf
    • https://cdn.shopify.com/s/files/1/0430/9159/1321/files/chiaki_fan_club.pdf
    • https://cdn.shopify.com/s/files/1/0436/8865/7051/files/75731817680.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/najevej.pdf
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/zekibalilosaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58014629257.pdf
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/kokapejepaxelinesesufig.pdf
    • https://cdn.shopify.com/s/files/1/0435/4070/9527/files/heart_arrhythmias.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/63154168471.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/kelezupebokita.pdf
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/tazes.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7110/files/bijegoderasomexapo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kikurum.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_off0000c21b.bin
b145979c3bbd30eabd4ec34d0addf811f1d8102e26c98c8194d9be48726bcfb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC21B 5160 bytes
font_01_sfnt_off0000d3aa.bin
b71230b8c4dc833baeab069bb788e00e1218c8c58cd4c27a575ca26eada2c03f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AA 10032 bytes
font_02_sfnt_off0000f613.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF613 4324 bytes

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