Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0be6a9af7ad7957…

MALICIOUS

PDF

57.7 KB Created: 2020-08-03 17:30:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 470a3208970717573e2d0edefd9b053b SHA-1: f73c81ebd157b0f39ec41ada02a2b47f550336ab SHA-256: b0be6a9af7ad7957fc943fcaa392a8e9f1d276c35bdf0b9b3f38eb58d1b88411
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This URL is associated with a lure for 'zill advanced engineering mathematics 6th edition solutions pdf'. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on cdn.shopify.com. The embedded URL is likely intended to redirect the user to a malicious site for further exploitation or credential harvesting.

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.ru/pify?keyword=zill+advanced+engineering+mathematics+6th+edition+solutions+pdf
    • http://files.criminallawyermissouri.com/uploads/1/3/1/4/131406202/9538189.pdf
    • http://files.bilgeceingilizce.net/uploads/1/3/0/7/130740053/nebimowa.pdf
    • http://files.thenoviceprofessor.com/uploads/1/3/0/8/130874139/cd5d2ec31bd.pdf
    • http://files.sai-deltamu.com/uploads/1/3/2/7/132712222/6314576.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/zuzaxupatomidurepewudedij.pdf
    • https://cdn.shopify.com/s/files/1/0431/9418/7933/files/sagex.pdf
    • https://cdn.shopify.com/s/files/1/0433/4590/3774/files/89632043686.pdf
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/65914550517.pdf
    • https://cdn.shopify.com/s/files/1/0433/0822/0574/files/30329202834.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5082/files/bogoxerof.pdf
    • https://cdn.shopify.com/s/files/1/0433/4911/5029/files/6134054067.pdf
    • https://cdn.shopify.com/s/files/1/0434/7379/7285/files/pofawujupuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3871/files/sijusagadawujezurube.pdf
    • https://cdn.shopify.com/s/files/1/0434/8428/3033/files/bakisatotife.pdf
    • https://cdn.shopify.com/s/files/1/0432/8125/2507/files/pimigemugulajep.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/23972074903.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vukabisozudetilo.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_off0000a281.bin
0b934eaf7fa458d2ea47c1a1277cbef3428f4ae9f46974c44928ff2213186e57		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA281 5740 bytes
font_01_sfnt_off0000b5eb.bin
d741199eb1b54383459ecb80058ef485985f161e8b10b2e1215e12e15b41b733		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5EB 10224 bytes

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