Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f532d282d8eabb0…

MALICIOUS

PDF

38.2 KB Created: 2020-08-05 15:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55a21c92b628fdcf468e6fa300ef3813 SHA-1: 0e7edd38bc7376365f73cf1e8d375efdebdbf663 SHA-256: 1f532d282d8eabb012ef85c3f754dbebbdce43644ddd2d7d0b00324890c27dbe
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain, ttraff.ru. This suggests a link farm or SEO poisoning attack designed to lure users to malicious infrastructure. The document body contains garbled text and what appears to be a legitimate-looking title, likely intended to mask the malicious intent. No scripts were extracted from this sample.

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=miller+and+miller+mathematical+statistics+solutions+pdf
    • http://files.aworldinneed.org/uploads/1/3/2/8/132815172/zezewez.pdf
    • http://files.affordablebarndoors.com/uploads/1/3/2/7/132712324/kemuzagaxurupuw.pdf
    • http://watuk.pur-pro.com/uploads/1/3/1/4/131437044/molovomonibakot.pdf
    • https://cdn.shopify.com/s/files/1/0438/5167/7856/files/31037137662.pdf
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/bugs_bunny_easter.pdf
    • https://cdn.shopify.com/s/files/1/0428/2925/0719/files/pikufurugazutob.pdf
    • https://cdn.shopify.com/s/files/1/0434/0465/6790/files/26541749459.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/79846422841.pdf
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/rimozevudoxu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5592/1817/files/18988595866.pdf
    • https://cdn.shopify.com/s/files/1/0441/2293/1352/files/sifidog.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.pdf
    • https://cdn.shopify.com/s/files/1/0438/4188/0224/files/77759404739.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_off000047fc.bin
89408398bd3923f11e91d2c6313ab28631fb79e13ebfbf7c8a0ebeb59a123fa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47FC 5280 bytes
font_01_sfnt_off000059b6.bin
389d666b827ddf3c0183082c0cf9e35a4437bf9fc6d7312b047f230d5a1fde96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59B6 10472 bytes
font_02_sfnt_off00007d64.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D64 4324 bytes

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