Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f5d2dfffa934627…

MALICIOUS

PDF

47.6 KB Created: 2020-08-23 01:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8d39bdc395b8ae13d435e7518e572db SHA-1: f514b67770cd940e60ffb0fb6d47a83024c72a6d SHA-256: 1f5d2dfffa9346272c53c8f1a60208a5f37f9d91b9e508c0a9f0e9fff300e849
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 pointing to ttraff.com, which is used to lure users with game-related keywords. The document body and embedded link structures confirm the intent to direct users to external URLs, likely for further exploitation or phishing. The presence of numerous Shopify-hosted PDF links, while many are benign, contributes to a link farm strategy to obscure the malicious redirector.

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=binding+of+isaac+rebirth++mac
    • http://files.lukaswolfacupuncture.com/uploads/1/3/1/8/131871720/2635b399.pdf
    • https://cdn.shopify.com/s/files/1/0437/9846/2624/files/47854052732.pdf
    • https://cdn.shopify.com/s/files/1/0449/5589/3928/files/angielski_biznesowy_sownictwo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2383/4011/files/aulad_ke_huqooq_in_islam_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7450/1285/files/61914477118.pdf
    • https://cdn.shopify.com/s/files/1/0432/4327/4395/files/jukejawepis.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/le_caoutchouc_naturel.pdf
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/approximation_for_bank_po.pdf
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/25130249156.pdf
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/pemerejitazawevezikuf.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dd6.bin
429f4b0590928ed24fb7388a795ed690a1a72e5db97715a691810c523d88b154		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD6 5380 bytes
font_01_sfnt_off00006ff1.bin
0f6dedbbf970a97b5afa8f15f10735423d76a7868a9727c66ff013c16f37519b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF1 4100 bytes
font_02_sfnt_off00007edb.bin
a6d8e3d511a3e5362cb1cbbd594a9bb63274078f32ffcaa0bdd3daf255337041		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDB 10740 bytes
font_03_sfnt_off0000a38f.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA38F 4324 bytes

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