PDF malware analysis — malicious · 8d89ca93a11ba6d3

MALICIOUS

PDF

45.4 KB Created: 2020-07-26 09:41:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bc383547beb577bc9566968566ca2cf7 SHA-1: b5a2e4b6c56ef184efcfe015433f1e6035d06448 SHA-256: 8d89ca93a11ba6d3d8d5e610144f0d62b06f7412e619baa36f5eb6eb413e86d7

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is ttraff.cc, which is used to redirect users to other sites. The document body, though heavily obfuscated, suggests a lure related to a 'caricature drawing book pdf'. No scripts were extracted from this sample.

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.cc/pify?keyword=caricature+drawing+book+pdf
- http://files.trueelevation.org/uploads/1/3/1/0/131070765/4807bfe0287e0.pdf
- http://files.gracechurchoftemeculavalley.com/uploads/1/3/2/8/132815317/09c4ac26.pdf
- http://files.ccstudioinc.com/uploads/1/3/1/3/131379803/9500163.pdf
- http://files.throughthereddoors.org/uploads/1/3/0/7/130775222/zipesevakazakot_weviralokinul_nerujasinup.pdf
- http://files.acscmerch.com/uploads/1/3/0/9/130969077/xakopizigewab-wajonuxevipo-kebin.pdf
- https://cdn.shopify.com/s/files/1/0431/2625/9876/files/vaguzogovimufenagi.pdf
- https://cdn.shopify.com/s/files/1/0432/1899/3307/files/6481338984.pdf
- https://cdn.shopify.com/s/files/1/0431/7301/9808/files/76987376585.pdf
- https://cdn.shopify.com/s/files/1/0440/4481/2438/files/96145474486.pdf
- https://cdn.shopify.com/s/files/1/0428/3406/7615/files/felosebikize.pdf
- https://cdn.shopify.com/s/files/1/0430/7740/2778/files/44255933451.pdf
- https://cdn.shopify.com/s/files/1/0438/9902/7611/files/52913259461.pdf
- https://cdn.shopify.com/s/files/1/0428/5153/2963/files/zitevebisakexugamivotap.pdf
- https://cdn.shopify.com/s/files/1/0437/3574/4673/files/79646847719.pdf
- https://cdn.shopify.com/s/files/1/0437/1588/7256/files/tuzizij.pdf
- https://cdn.shopify.com/s/files/1/0438/5538/0630/files/5723346205.pdf
- https://cdn.shopify.com/s/files/1/0433/1234/9334/files/96335731607.pdf
- https://cdn.shopify.com/s/files/1/0429/1058/0902/files/52188271485.pdf
- https://cdn.shopify.com/s/files/1/0427/9389/4044/files/vemoxomazepisuk.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_off00007552.bin` `cee513846961bc4791502ac9728a2daa53e3b18d4dd523ec222359645aaf56e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7552	5312 bytes
`font_01_sfnt_off00008788.bin` `eba2927cdfbe8213c1109f002a1dbc035006fc0b0de10d42fb021b0faa3117dc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8788	9552 bytes

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