PDF malware analysis — malicious · 316b5bd4337baaa5

MALICIOUS

PDF

45.7 KB Created: 2020-08-04 08:46:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4f992437dca4c77f96f4f5f23df8a6e2 SHA-1: 9787238d272b9d0dccb07599feaba076d1804722 SHA-256: 316b5bd4337baaa5a0747c510d35140e2f9b868aac268309fafac00017a442ff

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as a document about numbers in English. It also functions as a link farm, pointing to numerous other PDF files hosted on various domains, including Shopify. The primary malicious URL is https://ttraff.ru/pify?keyword=numeros+del+100+al+1000+en+ingles+pdf, which likely leads to further malicious content. The document body itself is heavily obfuscated and contains embedded URLs, but the heuristic firings clearly indicate malicious redirection and link farming behavior.

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=numeros+del+100+al+1000+en+ingles+pdf
- http://files.kindactswarmhearts.com/uploads/1/3/0/8/130813100/fizakufulu.pdf
- http://files.computerrepairnerds.com/uploads/1/3/0/8/130813715/kuvuna.pdf
- http://files.eat-your-veggies.com/uploads/1/3/0/9/130969183/xixasebakimomo.pdf
- http://files.nancybmann.com/uploads/1/3/0/8/130813357/rawubanovusad.pdf
- https://cdn.shopify.com/s/files/1/0432/8144/9118/files/77460031731.pdf
- https://cdn.shopify.com/s/files/1/0437/2017/9864/files/jelivosujofi.pdf
- https://cdn.shopify.com/s/files/1/0437/7133/0709/files/bitej.pdf
- https://cdn.shopify.com/s/files/1/0437/1814/8261/files/konefupemosajev.pdf
- https://cdn.shopify.com/s/files/1/0431/4136/5922/files/77713868781.pdf
- https://cdn.shopify.com/s/files/1/0431/1184/1958/files/15986554547.pdf
- https://cdn.shopify.com/s/files/1/0430/4830/4797/files/27269032246.pdf
- https://cdn.shopify.com/s/files/1/0434/5082/6905/files/irc_college_books.pdf
- https://cdn.shopify.com/s/files/1/0432/6513/0660/files/css_media_queries_desktop_first.pdf
- https://cdn.shopify.com/s/files/1/0430/4257/0402/files/zolarafowubiwonoze.pdf
- https://cdn.shopify.com/s/files/1/0428/8148/2919/files/bellbirds_poem.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_off0000656c.bin` `c6f7c322c9f30b1d0b36909b4fb1c00a6cdb2e12cd13692798e0673891b2ed45`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x656C	5524 bytes
`font_01_sfnt_off00007820.bin` `51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7820	1800 bytes
`font_02_sfnt_off000080ae.bin` `860796b1ce98de65cfde059de26848bbed7721139a442418ee30a973191dd438`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x80AE	11940 bytes

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