PDF malware analysis — malicious · 27ecc758ae4ef25f

MALICIOUS

PDF

44.1 KB Created: 2020-08-17 05:08:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fa55cdaff975ec9f30716aae27dc50c0 SHA-1: 8c8812cfc83bd5150857455d61fceb48fd2be98a SHA-256: 27ecc758ae4ef25f5279380045d57f86650f30113574513f67da272b4936d385

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, with one specifically identified as a malicious redirector pointing to 'ttraff.com'. This, combined with the ML classifier flagging the PDF as malicious, indicates a phishing or redirection attempt. The document body, though heavily obfuscated, contains the malicious URL, suggesting the intent is to trick the user into visiting a harmful site. No scripts were extracted, limiting the analysis of further stages.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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/pify?keyword=maryland+autism+waiver+fact+sheet
- http://files.katyasdance.com/uploads/1/3/0/7/130775970/75a523e00.pdf
- http://files.endectomorph.com/uploads/1/3/2/7/132710791/7c5620540570e.pdf
- https://cdn.shopify.com/s/files/1/0433/3525/4171/files/bokofojele.pdf
- https://cdn.shopify.com/s/files/1/0431/4651/0504/files/39707242069.pdf
- https://cdn.shopify.com/s/files/1/0438/4351/8629/files/66634737954.pdf
- https://cdn.shopify.com/s/files/1/0437/6828/3287/files/kubota_l3400_manual.pdf
- https://cdn.shopify.com/s/files/1/0432/6031/3763/files/babbitt_book.pdf
- https://cdn.shopify.com/s/files/1/0434/6173/8662/files/bafg_formular_1.pdf
- https://cdn.shopify.com/s/files/1/0428/3649/2444/files/introduction_of_calculus.pdf
- https://cdn.shopify.com/s/files/1/0430/1275/1523/files/apollo_11_mission_report_nasa.pdf
- https://cdn.shopify.com/s/files/1/0432/1096/5147/files/69876846789.pdf
- https://cdn.shopify.com/s/files/1/0429/0481/3721/files/dasibukuneboziso.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24413790208.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_off00006d08.bin` `df3b7674e645db21d7b7d68ee8087c8bc1182828f80164a29040857f2c6b8c6e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D08	5520 bytes
`font_01_sfnt_off00007fb7.bin` `314e4faef1f79c85bc0a0c1199494d5c911af0c4469fe45a4849fc44bd85f7d7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FB7	10552 bytes

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