PDF malware analysis — malicious · 32a6c318bd5b607a

MALICIOUS

PDF

47.6 KB Created: 2020-07-19 00:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9aa1d4ea0c8a0bda84fbb798224472ee SHA-1: 3c19d4857c210661430e50ce35cb987ee1a48606 SHA-256: 32a6c318bd5b607a0214d828b37f3e1fccb1c268d740f9a06a014c4904ddba16

150 Risk Score

Malware Insights

MITRE ATT&CK

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

This PDF document was flagged as malicious by multiple heuristics, including a critical finding for a malicious redirector link and a PDF link farm. The document body, though heavily obfuscated, suggests a lure related to 'Entity framework tutorial c'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The presence of numerous external links indicates an attempt at SEO manipulation and traffic generation to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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/wb?keyword=entity%20framework%20tutorial%20c#%20step%20by%20step%20pdf
- http://files.tcrinnovations.com/uploads/1/3/0/7/130738484/fb5a54.pdf
- http://files.barbarajbecker.com/uploads/1/3/0/8/130813362/5622055.pdf
- http://files.learning4development.org/uploads/1/3/1/4/131407571/zusujate.pdf
- http://files.barbarajbecker.com/uploads/1/3/0/8/130813362/56
- https://litilazer.files.wordpress.com/2020/07/83787424205.pdf
- https://ranosadimo.files.wordpress.com/2020/07/vifoxosotenokabig.pdf
- https://kopeboxapum.files.wordpress.com/2020/06/18536381291.pdf
- https://tuxulaz.files.wordpress.com/2020/07/78606988358.pdf
- https://legebepome.files.wordpress.com/2020/06/sulazarepomodenajuku.pdf
- https://gimanuzil.files.wordpress.com/2020/07/wemewodeburi.pdf
- https://xepodifi.files.wordpress.com/2020/07/bigizozetusagegaj.pdf
- https://sedibim.files.wordpress.com/2020/06/lujuvegexekabagovokuv.pdf
- https://cdn.shopify.com/s/files/1/0431/1616/7328/files/56648414905.pdf
- https://cdn.shopify.com/s/files/1/0431/9703/8756/files/gunajuruga.pdf
- https://cdn.shopify.com/s/files/1/0433/0268/2789/files/tilimeza.pdf
- https://cdn.shopify.com/s/files/1/0429/7667/3946/files/65158978508.pdf
- https://cdn.shopify.com/s/files/1/0431/6063/3504/files/kisijalofebesimix.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25618010541.pdf
- https://cdn.shopify.com/s/files/1/0430/3169/1421/files/bomakirutexoririrojupoxix.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_off000072c3.bin` `edc1c3dcd7d90ac1a7e6cf6016a58d8f40e05e6e59b00de08745a5845e03f2bd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72C3	4948 bytes
`font_01_sfnt_off00008398.bin` `f9b4b362408339415800fa0245c1b8f19d37140ee611615f43d0f19c92a77a00`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8398	14656 bytes

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