PDF malware analysis — malicious · 4a6fa68b3d514987

MALICIOUS

PDF

43.1 KB Created: 2020-08-05 08:03:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b485f333a8424e8224dad17e0496097f SHA-1: fdf8a6775141333dd5bac32c47ef2321c2ec00cd SHA-256: 4a6fa68b3d51498793b54c2b1df82828ecdf3dd1167a8cfa14ed5cc1c65053a6

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The document body, though heavily obfuscated, contains the URL for the malicious redirector, suggesting the primary intent is to redirect the user to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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=hindu+baby+boy+names+in+telugu+pdf
- http://files.modernartphotograph.com/uploads/1/3/1/6/131636775/lofutaga_luxerefozir_ramasajukitekab.pdf
- http://files.fullflightcounseling.com/uploads/1/3/1/3/131384567/f80cf60e94dbec.pdf
- http://files.jennanormanphotography.com/uploads/1/3/0/7/130775867/9943146.pdf
- http://files.mattawanmasons.org/uploads/1/3/1/4/131408432/tetegifakebe.pdf
- https://cdn.shopify.com/s/files/1/0429/5848/7703/files/nofewitowimeziserutoraf.pdf
- https://cdn.shopify.com/s/files/1/0428/4655/2227/files/58233178615.pdf
- https://cdn.shopify.com/s/files/1/0430/8415/2986/files/14820446445.pdf
- https://cdn.shopify.com/s/files/1/0428/1945/3095/files/69779187519.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17612659915.pdf
- https://cdn.shopify.com/s/files/1/0432/9567/0432/files/86854099037.pdf
- https://cdn.shopify.com/s/files/1/0434/3057/6278/files/13651348063.pdf
- https://cdn.shopify.com/s/files/1/0430/9444/2137/files/39116870790.pdf
- https://cdn.shopify.com/s/files/1/0433/7047/9768/files/celsius_to_fahrenheit_conversion_worksheet.pdf
- https://cdn.shopify.com/s/files/1/0434/2402/2677/files/rasof.pdf
- https://cdn.shopify.com/s/files/1/0428/7637/1110/files/zosiduzilodosof.pdf
- https://cdn.shopify.com/s/files/1/0430/7438/8119/files/15058536361.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_off00005cb2.bin` `d09e9dae8bc96c0dac28a67d2a2ca06625f30ab279bf583d4288c460ad05fa04`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5CB2	5468 bytes
`font_01_sfnt_off00006f3f.bin` `453c7bd406ce20af536b3f2c1292d8d8496f9f49c6166116be2d7843b33753b0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F3F	3596 bytes
`font_02_sfnt_off00007d4d.bin` `e15e946f981952b4df3f854afaf862487810a15d280667cfe6abef1ffc4a9b28`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D4D	10076 bytes

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