PDF malware analysis — malicious · b4745edb49834bd8

MALICIOUS

PDF

49.6 KB Created: 2020-07-30 18:54:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 79d3ca401a914b95d17732d816f4b2be SHA-1: 60dbe48dd4ecde7fad8ff4f1237d4310055108d7 SHA-256: b4745edb49834bd815ed690626bd9adca406f14917c451f8b8cd3c8766e3e5dd

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links redirects through ttraff.ru, which is flagged as malicious. The document body, though heavily obfuscated, appears to be related to academic notes, suggesting a lure to disguise the malicious intent. The heuristic firings strongly indicate a malicious redirector and a link farm strategy.

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=aggregate+demand+and+aggregate+supply+notes+pdf
- http://files.animaths.net/uploads/1/3/2/7/132740193/gupojomalalom.pdf
- http://files.fevanimals1.org/uploads/1/3/0/7/130739239/jolukukejifar-dusapuvekitu-gisot-pemusikirupizam.pdf
- http://files.makerteacher.net/uploads/1/3/1/4/131438501/9152510.pdf
- http://files.animaths.net/uploads/1/3/2/7/13
- https://cdn.shopify.com/s/files/1/0430/6314/8695/files/wukanemosorikizatel.pdf
- https://cdn.shopify.com/s/files/1/0430/3618/0634/files/82604124128.pdf
- https://cdn.shopify.com/s/files/1/0428/5035/3318/files/24957629016.pdf
- https://cdn.shopify.com/s/files/1/0432/9901/2766/files/mibifufaxokitepukuzumiron.pdf
- https://cdn.shopify.com/s/files/1/0433/1814/9285/files/nulapuzomeruba.pdf
- https://cdn.shopify.com/s/files/1/0432/7541/9798/files/80941451808.pdf
- https://cdn.shopify.com/s/files/1/0429/8289/9871/files/64443568563.pdf
- https://cdn.shopify.com/s/files/1/0433/5819/1768/files/debulilesaxukejulolabupap.pdf
- https://cdn.shopify.com/s/files/1/0437/1628/0475/files/xuniv.pdf
- https://cdn.shopify.com/s/files/1/0433/9538/3461/files/muxufinisopubaliponudaw.pdf
- https://cdn.shopify.com/s/files/1/0434/5279/2982/files/wowen.pdf
- https://cdn.shopify.com/s/files/1/0435/1816/5146/files/xuxevefidakinimazavi.pdf
- https://cdn.shopify.com/s/files/1/0430/8297/3346/files/90695162853.pdf
- https://cdn.shopify.com/s/files/1/0432/6585/1542/files/41155460613.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00008587.bin` `2f3092f26b8d622205c35b93844c95bb4f762b0b07530e38fb12afa866bf4020`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8587	5288 bytes
`font_01_sfnt_off00009775.bin` `ffa7c0a3d4b5a9ff69b1cc3c48f4041a6b396c0c61b32887671c4c808ef42e06`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9775	9832 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.