Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b1d34d88f1124d7…

MALICIOUS

PDF

41.5 KB Created: 2020-08-07 23:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 895780b3d6ec652770b5639fff02c4bc SHA-1: 3cef2e33e86ae4b2e42dc80a6029b3c7e06ae5e6 SHA-256: 9b1d34d88f1124d79e64a6238d690163574e800dc2fda5331c5d3215225df8a1
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a document about "biceps stretches". This URL is likely intended to lead the user to a malicious payload. The PDF also contains a large number of links to other PDFs hosted on Shopify, which is characteristic of SEO link farm abuse to improve search engine ranking for malicious content.

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=biceps+stretches+pdf
    • http://files.singersandactorsworkshop.com/uploads/1/3/2/7/132740218/mubazaxumadajag.pdf
    • http://files.zanyunoodles.com/uploads/1/3/0/7/130739381/sikete-wemotuta.pdf
    • http://wazare.templargames.com/uploads/1/3/1/0/131070450/meratu.pdf
    • http://mejudom.alexanderbelphotography.com/uploads/1/3/1/4/131437792/756c9.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/vejisoxuvoribilom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13121593915.pdf
    • https://cdn.shopify.com/s/files/1/0434/6177/1430/files/nufagumugevubedu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2632/5402/files/geomorphology_book_by_thornbury.pdf
    • https://cdn.shopify.com/s/files/1/0440/2990/2998/files/6240982767.pdf
    • https://cdn.shopify.com/s/files/1/0429/2752/1948/files/wadutumaweladefizi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5782/4419/files/68250846265.pdf
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/resident_evil_5_walkthrough_gamefaqs.pdf
    • https://cdn.shopify.com/s/files/1/0438/2644/6496/files/different_types_of_statistical_tests.pdf
    • https://cdn.shopify.com/s/files/1/0430/7252/0353/files/wamoriwovadafazefumeraf.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0040/files/blockchain_explication.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_off00006602.bin
5e13c7af1b3dd1133de855ec49afed5ae17a1c14a0590219a9ecff0162293290		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6602 5048 bytes
font_01_sfnt_off00007730.bin
384c4418f059d00bfb173d4881c4f500551c50cad0fb1da28cf4eafa2d978c19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7730 10052 bytes

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