PDF malware analysis — malicious · 0e48031d6112e0ef

MALICIOUS

PDF

41.6 KB Created: 2020-06-02 10:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1d3844d1b63913aa881c60f4e1db8e7f SHA-1: 379ef8c8e425d55d05835e511f49c122fddfb7a1 SHA-256: 0e48031d6112e0ef0709f63528682021694b2c74b92b9fe65982489801614478

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a malicious intent to manipulate search engine results or redirect users to potentially harmful content. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the sheer volume of outbound links points to a distribution or redirection mechanism.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
External URI info PDF_URI

PDF contains an external URL action
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 http://changedthrutheword.gammaxiques.org/uploads/1/3/0/7/130738541/130738541.html#canon+powershot+d10
- http://74-123-73-21.mgwnet.com/uploads/1/3/0/6/130639268/7432875.pdf
- http://socialtradingschool.com/uploads/1/3/0/6/130604024/1534746.pdf
- http://prospechomeinspect.com/uploads/1/3/1/4/131454215/ketudego-bajegajiw-sewomuf.pdf
- http://fousdepatrimoine.com/uploads/1/3/1/1/131164572/katatow.pdf
- http://tkperformancehorses.net/uploads/1/3/0/8/130874612/3900885.pdf
- http://graffitivoices.com/uploads/1/3/1/1/131164437/1338735.pdf
- http://depressedinthenw.com/uploads/1/3/1/6/131606755/867a1a336.pdf
- http://webmail.mr-monticello.com/uploads/1/3/1/3/131379518/tejazubavasatuzuguke.pdf
- http://changedthrutheword.gammaxiques.org/uploads/1/3/0/7/130738541/terms.html
- http://changedthrutheword.gammaxiques.org/uploads/1/3/0/7/130738541/dmca.html
- http://changedthrutheword.gammaxiques.org/uploads/1/3/0/7/130738541/policy.html
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://nomutodiri.files.wordpress.com/2020/05/janojitebifunejako.pdf
- https://bunagenopofo.files.wordpress.com/2020/05/1024937182.pdf
- https://buwivimew.files.wordpress.com/2020/05/fokorukeviwulerogarugurut.pdf
- https://lotopakaxil.files.wordpress.com/2020/05/43447623647.pdf
- https://zokivofi.files.wordpress.com/2020/06/7473350350.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/
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000771e.bin` `7e05091e90ed8c4a145ff407955c42a0bd3f90ad6eba5664ce3de5698f9041e5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x771E	10536 bytes

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