PDF malware analysis — malicious · 2673138216b7fcff

MALICIOUS

PDF

51.7 KB Created: 2020-08-10 21:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8f88e7342beeae4db662dde0b4aaa7d3 SHA-1: 0f688e4957e2b6f2bc0ebda8a0082d6b0e7c87d7 SHA-256: 2673138216b7fcffefc8828fc597b829ac6ee81daacf3f9c64654e22d0fa8987

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.ru'. The document body, though heavily obfuscated, contains a reconstructed URL that matches the malicious redirector. Additionally, a large number of external PDF links were found, many hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure the true malicious destination.

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=quadratische+gleichungen+l%25C3%25B6sen+aufgaben+mit+l%25C3%25B6sungen+pdf
- http://files.taupobiblechurch.org.nz/uploads/1/3/0/8/130874097/8fe4cde900f4.pdf
- http://files.seo-beastmode.com/uploads/1/3/1/4/131437822/a17469d.pdf
- http://files.tangonegrofilm.com/uploads/1/3/0/8/130814475/mezepi_xazeruwilede_woxunigitugugi.pdf
- https://cdn.shopi
- https://cdn.shopify.com/s/files/1/0438/4315/8166/files/juroxabejenak.pdf
- https://cdn.shopify.com/s/files/1/0434/6671/9385/files/15037623201.pdf
- https://cdn.shopify.com/s/files/1/0429/6579/4969/files/gefizidijenudumifowidux.pdf
- https://cdn.shopify.com/s/files/1/0430/8749/5321/files/92724470136.pdf
- https://cdn.shopify.com/s/files/1/0431/1787/1255/files/dauntless_jagged_spark_scale.pdf
- https://cdn.shopify.com/s/files/1/0430/5528/4373/files/69787218337.pdf
- https://cdn.shopify.com/s/files/1/0432/7243/7910/files/gizad.pdf
- https://cdn.shopify.com/s/files/1/0431/0990/8642/files/17846975895.pdf
- https://cdn.shopify.com/s/files/1/0431/6954/6395/files/zalulotibifotan.pdf
- https://cdn.shopify.com/s/files/1/0440/4248/5910/files/62956237091.pdf
- https://cdn.shopify.com/s/files/1/0429/7005/4805/files/bubaron.pdf
- https://cdn.shopify.com/s/files/1/0428/8030/3270/files/adjectives_worksheets_for_grade_1.pdf
- https://cdn.shopify.com/s/files/1/0435/9038/5821/files/excel_download_for_mac.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00006f99.bin` `f1c032e475fa149646a5c89cd92ef4c1dd214f9189fd66c61d43a4614b60d984`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F99	5908 bytes
`font_01_sfnt_off00008346.bin` `4efbbdf883079e543598b8d7e3051b70aa10a3aee888502e3d9a9577106fbc1c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8346	11584 bytes
`font_02_sfnt_off0000a971.bin` `fff8b70d67420864e2a263fdbbaad35efae781e73a516d3cf38207748e8715b5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA971	16088 bytes

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