Malicious PDF — malware analysis report

Static analysis result for SHA-256 d493ed1e1dffb1fa…

MALICIOUS

PDF

52.5 KB Created: 2020-08-01 17:16:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 717d4a880bdfe17eeb01d2940be10f3e SHA-1: 1bd7301c2c6eaf8bd70ccf6b8d57eb53b38b8d6b SHA-256: d493ed1e1dffb1fa1a3a793106533b82909c0df7ad669a82d6d6bb8b38d2407b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are hosted on Shopify. The document body, though partially garbled, contains the same text as the malicious URL's query parameter, suggesting a lure related to financial statements. The primary attack vector appears to be social engineering via a deceptive link within the PDF.

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=what+goes+on+an+income+statement
    • http://files.starsidepta232.org/uploads/1/3/1/6/131636562/mubif-noraluvugavija-bafowulogal.pdf
    • http://files.sincerelyalana.org/uploads/1/3/1/4/131413718/7313201.pdf
    • http://files.lakehousestudio.us/uploads/1/3/0/7/130740213/c4414368.pdf
    • http://files.beautydetangled.com/uploads/1/3/2/3/132302999/6468182.pdf
    • http://files.albertacriticalcaretraining.com/uploads/1/3/1/0/131071191/6754106.pdf
    • https://cdn.shopify.com/s/files/1/0434/4466/6529/files/73436100769.pdf
    • https://cdn.shopify.com/s/files/1/0431/7587/0613/files/91374196304.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/lovitexoxuguk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/faxusumowavunisipor.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/sexi_video_com.pdf
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/54923431973.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4808/files/49312497603.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/91396762068.pdf
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/84781740424.pdf
    • https://cdn.shopify.com/s/files/1/0434/2503/8498/files/77279714956.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/xekewiguromotoboxisaxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/3656/5923/files/31894942644.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_off000091d7.bin
e2b558dfd34fd9879a3a6064407429439e798165ddb6fcf6f62dbfb476812bf0
pdf-font-stream PDF embedded font (sfnt) at offset 0x91D7 5100 bytes
font_01_sfnt_off0000a31d.bin
7c6336b4bb112f643064dbc605740d3112a9b21da1184029917d2e3dfb719b58
pdf-font-stream PDF embedded font (sfnt) at offset 0xA31D 9980 bytes